“docker buildx bake” not push multiplatform to registry

[ziobizio81]

Contributing guidelines

• I've read the contributing guidelines and wholeheartedly agree

I've found a bug and checked that ...

• ... the documentation does not mention anything about my problem
• ... there are no open or closed issues that are related to my problem

Description

Hi, I’m using docker desktop on Apple Silicon M1.

I’m trying to use Docker Buildx Bake to build images, and they are all multiplatform images (arm64,amd64).
I point out that they use directly “docker buildx build … --platform linux/amd64,linux/arm64” it works without problems and in the registry I find the same image with both architectures available.

I’m starting to use “bake” to exploit its potential, but it seems that it doesn’t push with both architectures, but I find only the first one defined in the list “platforms = [“linux/arm64”,“linux/amd64”]”, now I find the “arm64” architecture, and if I invert them, I find only “amd64”.

Below I report my configuration and the build command.
The build of both architectures is done but only the first one is pushed to the registry.

Expected behaviour

I expected the build to push Image for both architectures like when I do "docker buildx buil --platform=linux/amd64,linux/aarm64"

Actual behaviour

An image is pushed with only 1 architecture, the first one indicated platforms = ["linux/arm64","linux/amd64"]

Buildx version

github.com/docker/buildx v0.21.1-desktop.2 65a04767fd3000fbac3b7120cc6115d518678e33

Docker info

Client:
 Version:    28.0.1
 Context:    desktop-linux
 Debug Mode: false
 Plugins:
  ai: Docker AI Agent - Ask Gordon (Docker Inc.)
    Version:  v0.9.8
    Path:     /Users/pippo/.docker/cli-plugins/docker-ai
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.21.1-desktop.2
    Path:     /Users/pippo/.docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.33.1-desktop.1
    Path:     /Users/pippo/.docker/cli-plugins/docker-compose
  debug: Get a shell into any image or container (Docker Inc.)
    Version:  0.0.38
    Path:     /Users/pippo/.docker/cli-plugins/docker-debug
  desktop: Docker Desktop commands (Beta) (Docker Inc.)
    Version:  v0.1.5
    Path:     /Users/pippo/.docker/cli-plugins/docker-desktop
  dev: Docker Dev Environments (Docker Inc.)
    Version:  v0.1.2
    Path:     /Users/pippo/.docker/cli-plugins/docker-dev
  extension: Manages Docker extensions (Docker Inc.)
    Version:  v0.2.27
    Path:     /Users/pippo/.docker/cli-plugins/docker-extension
  feedback: Provide feedback, right in your terminal! (Docker Inc.)
    Version:  v1.0.5
    Path:     /Users/pippo/.docker/cli-plugins/docker-feedback
  init: Creates Docker-related starter files for your project (Docker Inc.)
    Version:  v1.4.0
    Path:     /Users/pippo/.docker/cli-plugins/docker-init
  sbom: View the packaged-based Software Bill Of Materials (SBOM) for an image (Anchore Inc.)
    Version:  0.6.0
    Path:     /Users/pippo/.docker/cli-plugins/docker-sbom
  scout: Docker Scout (Docker Inc.)
    Version:  v1.16.3
    Path:     /Users/pippo/.docker/cli-plugins/docker-scout

Server:
 Containers: 17
  Running: 16
  Paused: 0
  Stopped: 1
 Images: 69
 Server Version: 28.0.1
 Storage Driver: overlayfs
  driver-type: io.containerd.snapshotter.v1
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 CDI spec directories:
  /etc/cdi
  /var/run/cdi
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: bcc810d6b9066471b0b6fa75f557a15a1cbf31bb
 runc version: v1.2.4-0-g6c52b3f
 init version: de40ad0
 Security Options:
  seccomp
   Profile: unconfined
  cgroupns
 Kernel Version: 6.10.14-linuxkit
 Operating System: Docker Desktop
 OSType: linux
 Architecture: aarch64
 CPUs: 10
 Total Memory: 13.63GiB
 Name: docker-desktop
 ID: 2aad3796-f028-45d7-80ad-6513851b584b
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 HTTP Proxy: http.docker.internal:3128
 HTTPS Proxy: http.docker.internal:3128
 No Proxy: hubproxy.docker.internal
 Labels:
  com.docker.desktop.address=unix:///Users/pippo/Library/Containers/com.docker.docker/Data/docker-cli.sock
 Experimental: false
 Insecure Registries:
  hubproxy.docker.internal:5555
  ::1/128
  127.0.0.0/8
 Live Restore Enabled: false

WARNING: daemon is not using the default seccomp profile

Builders list

NAME/NODE           DRIVER/ENDPOINT     STATUS    BUILDKIT   PLATFORMS
default             docker
 \_ default          \_ default         running   v0.20.0    linux/amd64 (+2), linux/arm64, linux/ppc64le, linux/s390x, (2 more)
desktop-linux*      docker
 \_ desktop-linux    \_ desktop-linux   running   v0.20.0    linux/amd64 (+2), linux/arm64, linux/ppc64le, linux/s390x, (2 more)

Configuration

group "default" {
    targets = [
        "test-nginx"
    ]
}

variable "shared_args" {
    default = {
        REGISTRY="myregistry/team-ri"
    }
}

target "test-nginx" {
    context = "../"
    dockerfile = "./Dockerfiles/test-nginx"
    tags = ["${shared_args.REGISTRY}/test-nginx:latest"]
    platforms = ["linux/arm64","linux/amd64"]
    output = ["type=registry"]
}

Build logs

Output of command **docker buildx bake test-nginx**:

[+] Building 17.2s (21/21) FINISHED                                                                                                    docker:desktop-linux
 => [internal] load build definition from test-nginx                                                                                                    0.0s
 => => transferring dockerfile: 702B                                                                                                                   0.0s
 => [linux/arm64 internal] load metadata for docker.io/nginxinc/nginx-unprivileged:bookworm-perl                                                       1.2s
 => [linux/amd64 internal] load metadata for docker.io/nginxinc/nginx-unprivileged:bookworm-perl                                                       1.2s
 => [auth] nginxinc/nginx-unprivileged:pull token for registry-1.docker.io                                                                             0.0s
 => [internal] load .dockerignore                                                                                                                      0.1s
 => => transferring context: 2B                                                                                                                        0.0s
 => [linux/amd64 1/6] FROM docker.io/nginxinc/nginx-unprivileged:bookworm-perl@sha256:39b32e6580042fa1cdd8723c272c26feac6dff2d0e3abaf4ca5c0a6737bab38  0.0s
 => => resolve docker.io/nginxinc/nginx-unprivileged:bookworm-perl@sha256:39b32e6580042fa1cdd8723c272c26feac6dff2d0e3abaf4ca5c0a6737bab38f             0.0s
 => [linux/arm64 1/6] FROM docker.io/nginxinc/nginx-unprivileged:bookworm-perl@sha256:39b32e6580042fa1cdd8723c272c26feac6dff2d0e3abaf4ca5c0a6737bab38  0.0s
 => => resolve docker.io/nginxinc/nginx-unprivileged:bookworm-perl@sha256:39b32e6580042fa1cdd8723c272c26feac6dff2d0e3abaf4ca5c0a6737bab38f             0.0s
 => [internal] load build context                                                                                                                      0.0s
 => => transferring context: 345B                                                                                                                      0.0s
 => CACHED [linux/arm64 2/6] COPY --chown=nginx:root Dockerfiles/utils/test-nginx/proxy_sets.conf /etc/nginx/proxy_sets.conf                            0.0s
 => CACHED [linux/arm64 3/6] COPY --chown=nginx:root Dockerfiles/utils/test-nginx/dhparam.pem /etc/ssl/certs/dhparam.pem                                0.0s
 => CACHED [linux/arm64 4/6] WORKDIR /etc/nginx/templates                                                                                              0.0s
 => CACHED [linux/arm64 5/6] COPY --chown=nginx:root Dockerfiles/utils/test-nginx/default.conf.template /etc/nginx/templates/default.conf.template      0.0s
 => CACHED [linux/arm64 6/6] WORKDIR /etc/nginx                                                                                                        0.0s
 => CACHED [linux/amd64 2/6] COPY --chown=nginx:root Dockerfiles/utils/test-nginx/proxy_sets.conf /etc/nginx/proxy_sets.conf                            0.0s
 => CACHED [linux/amd64 3/6] COPY --chown=nginx:root Dockerfiles/utils/test-nginx/dhparam.pem /etc/ssl/certs/dhparam.pem                                0.0s
 => CACHED [linux/amd64 4/6] WORKDIR /etc/nginx/templates                                                                                              0.0s
 => CACHED [linux/amd64 5/6] COPY --chown=nginx:root Dockerfiles/utils/test-nginx/default.conf.template /etc/nginx/templates/default.conf.template      0.0s
 => CACHED [linux/amd64 6/6] WORKDIR /etc/nginx                                                                                                        0.0s
 => exporting to image                                                                                                                                 6.5s
 => => exporting layers                                                                                                                                0.0s
 => => exporting manifest sha256:bb411e8547dc5f5dee883b5e3e8374b2d826b2622e4b033f1d78a704d8213740                                                      0.0s
 => => exporting config sha256:ac24a7a9130f1bcd290f2066451978069133e8f4ad384e31b7085afcf873f030                                                        0.0s
 => => exporting attestation manifest sha256:91982ee3df1cf4971fb56251009944f2591f4d7318f029059cb82b94c1eabce1                                          0.0s
 => => exporting manifest sha256:52d430c125ee3af1eeb0a214ba5db410996565b79608fb232bd94f552f949ba3                                                      0.0s
 => => exporting config sha256:06cfd2aed70959ef81fad55b8941168b3716b4fe009d0431bc945105d8f132e0                                                        0.0s
 => => exporting attestation manifest sha256:596b99bc9494a351909b981b762f7dc7c036a0823c0de2c844d1073d36f7821a                                          0.0s
 => => exporting manifest list sha256:1b1bc8346cab0e416eb594cf6e72bd2b170b3c35a4e19a79db54adab146d4dda                                                 0.0s
 => => naming to myregistry/team-ri/test-nginx:latest                                                                                        0.0s
 => => unpacking to myregistry/team-ri/test-nginx:latest                                                                                     0.0s
 => => pushing layers                                                                                                                                  3.9s
 => => pushing manifest for myregistry/team-ri/test-nginx:latest@sha256:1b1bc8346cab0e416eb594cf6e72bd2b170b3c35a4e19a79db54adab146d4dda     2.3s
 => [auth] team-ri/test-nginx:pull,push token for hub.docker.hpecorp.net                                                                                 0.0s
 => pushing myregistry/team-ri/test-nginx:latest with docker                                                                                 4.6s
 => => pushing layer 11daa0b242e2                                                                                                                      4.5s
 => => pushing layer 63f005c23fcf                                                                                                                      4.5s
 => => pushing layer 6a74c9c99a41                                                                                                                      4.5s
 => => pushing layer 67a81010326b                                                                                                                      4.5s
 => => pushing layer 790facd12f38                                                                                                                      4.5s
 => => pushing layer ed5348a8c109                                                                                                                      4.5s
 => => pushing layer 78f3fb170bbb                                                                                                                      4.5s
 => => pushing layer 6c249a1215e3                                                                                                                      4.5s
 => => pushing layer 19a821968632                                                                                                                      4.5s
 => => pushing layer 781931fc4095                                                                                                                      4.5s
 => => pushing layer 09b1426e7e82                                                                                                                      4.5s
 => => pushing layer b24250f862d7                                                                                                                      4.5s
 => => pushing layer 654212a1ea3d                                                                                                                      4.5s
 => => pushing layer ecfbfd72ce38                                                                                                                      4.5s
 => => pushing layer bda8ead29f10                                                                                                                      4.5s
 => => pushing layer 4f4fb700ef54                                                                                                                      4.5s
 => => pushing layer 91dd5c25c39b                                                                                                                      4.5s
 => => pushing layer d51c377d94da                                                                                                                      4.5s
 => => pushing layer 36af18e7311e                                                                                                                      4.5s
 => => pushing layer 8ea11555e890                                                                                                                      4.5s
 => => pushing layer 3a8cb4a965d3                                                                                                                      4.5s
 => => pushing layer b4f23b55d2d5                                                                                                                      4.5s
 => => pushing layer fa6a0d960b2c                                                                                                                      4.5s
 => => pushing layer 23bd0d32ea0c                                                                                                                      4.5s
 => => pushing layer ef266f35471a                                                                                                                      4.5s
 => => pushing layer 46cbc9b0a7c9                                                                                                                      4.5s
 => => pushing layer db959b5c062b                                                                                                                      4.5s
 => => pushing layer 7cf63256a31a                                                                                                                      4.5s

Additional info

No response

[crazy-max]

  driver-type: io.containerd.snapshotter.v1
...
Operating System: Docker Desktop

Looks like you're using the containerd store on Docker Desktop.

I could not repro on my side when pushing to Docker Hub:

group "default" {
    targets = [
        "test-nginx"
    ]
}

variable "shared_args" {
    default = {
        REGISTRY="crazymax"
    }
}

target "test-nginx" {
    #context = "../"
    #dockerfile = "./Dockerfiles/test-nginx"
    tags = ["${shared_args.REGISTRY}/test-nginx:latest"]
    platforms = ["linux/arm64","linux/amd64"]
    output = ["type=registry"]
}

FROM busybox
RUN echo hello

$ docker buildx bake --print
#1 [internal] load local bake definitions
#1 reading docker-bake.hcl 366B / 366B done
#1 DONE 0.0s
{
  "group": {
    "default": {
      "targets": [
        "test-nginx"
      ]
    }
  },
  "target": {
    "test-nginx": {
      "context": ".",
      "dockerfile": "Dockerfile",
      "tags": [
        "crazymax/test-nginx:latest"
      ],
      "platforms": [
        "linux/arm64",
        "linux/amd64"
      ],
      "output": [
        {
          "type": "registry"
        }
      ]
    }
  }
}

#11 exporting to image
#11 exporting layers
#11 exporting layers 0.2s done
#11 exporting manifest sha256:ead743d0c850c3ded3204fc4171efe94d89b357b6790f502b37369a042da041b 0.0s done
#11 exporting config sha256:8d3e5fb586c7f1276d948fdeeebab9fc215f0ecf23a02386ea0d1ec8c8ddc464 0.0s done
#11 exporting attestation manifest sha256:bddd975def62f1d216a979f284c231d04b13515af0be54e8720737c39430fe42 0.0s done
#11 exporting manifest sha256:f3e7e0c51cf8a41dffdf31b60ad5d028d4c6b6cc1c66f6baaf5644ad964485e8 0.0s done
#11 exporting config sha256:7def5e3cb42f041e86efa0c9dbd1b96165e887b385639af3b25352b8753dcfbc
#11 exporting config sha256:7def5e3cb42f041e86efa0c9dbd1b96165e887b385639af3b25352b8753dcfbc 0.0s done
#11 exporting attestation manifest sha256:475cb79bedbcabb3d013ab217d4883d163014b79e82e47160ab0933fd1e9be16 0.0s done
#11 exporting manifest list sha256:f0496af40099adc4e0a52eaf85d5f8ebbfd7d0ba55ba74dffcee5b50f95b9030 0.0s done
#11 naming to docker.io/crazymax/test-nginx:latest done
#11 unpacking to docker.io/crazymax/test-nginx:latest 0.0s done
#11 pushing layers
#11 ...

#12 [auth] crazymax/test-nginx:pull,push token for registry-1.docker.io
#12 DONE 0.0s

#11 exporting to image
#11 ...

#13 [auth] crazymax/test:pull crazymax/test-nginx:pull,push token for registry-1.docker.io
#13 DONE 0.0s

#11 exporting to image
#11 pushing layers 2.8s done
#11 pushing manifest for docker.io/crazymax/test-nginx:latest@sha256:f0496af40099adc4e0a52eaf85d5f8ebbfd7d0ba55ba74dffcee5b50f95b9030
#11 pushing manifest for docker.io/crazymax/test-nginx:latest@sha256:f0496af40099adc4e0a52eaf85d5f8ebbfd7d0ba55ba74dffcee5b50f95b9030 2.7s done
#11 DONE 5.9s

https://explore.ggcr.dev/?image=crazymax%2Ftest-nginx%3Alatest

Also from your logs:

=> exporting to image                                                                                                                                 6.5s
 => => exporting layers                                                                                                                                0.0s
 => => exporting manifest sha256:bb411e8547dc5f5dee883b5e3e8374b2d826b2622e4b033f1d78a704d8213740                                                      0.0s
 => => exporting config sha256:ac24a7a9130f1bcd290f2066451978069133e8f4ad384e31b7085afcf873f030                                                        0.0s
 => => exporting attestation manifest sha256:91982ee3df1cf4971fb56251009944f2591f4d7318f029059cb82b94c1eabce1                                          0.0s
 => => exporting manifest sha256:52d430c125ee3af1eeb0a214ba5db410996565b79608fb232bd94f552f949ba3                                                      0.0s
 => => exporting config sha256:06cfd2aed70959ef81fad55b8941168b3716b4fe009d0431bc945105d8f132e0                                                        0.0s
 => => exporting attestation manifest sha256:596b99bc9494a351909b981b762f7dc7c036a0823c0de2c844d1073d36f7821a                                          0.0s
 => => exporting manifest list sha256:1b1bc8346cab0e416eb594cf6e72bd2b170b3c35a4e19a79db54adab146d4dda                                                 0.0s
 => => naming to myregistry/team-ri/test-nginx:latest                                                                                        0.0s
 => => unpacking to myregistry/team-ri/test-nginx:latest                                                                                     0.0s
 => => pushing layers                                                                                                                                  3.9s
 => => pushing manifest for myregistry/team-ri/test-nginx:latest@sha256:1b1bc8346cab0e416eb594cf6e72bd2b170b3c35a4e19a79db54adab146d4dda     2.3s

It exports both manifests so don't think there is anything wrong. What registry are you using? Is your image public so we can take a look?

[ziobizio81]

@crazy-max The problem is related to the remote registry. My company registry is based on "Mirantis Secure Registry v.2.9.7". If I do the same procedure using my personal account on "hub.docker.com" it works.

But I don't understand the difference between "docker buildx build" and "docker buildx bake" other than the mode and ease of building many images at once. Does the registry have any specific requirements or compatibility for Bake?

https://explore.ggcr.dev/?image=ziobizio81%2Fbizio%3Aart-nginx-latest

[+] Building 11.7s (20/20) FINISHED                                                                                                    docker:desktop-linux
 => [internal] load build definition from art-nginx                                                                                                    0.1s
 => => transferring dockerfile: 702B                                                                                                                   0.0s
 => [linux/amd64 internal] load metadata for docker.io/nginxinc/nginx-unprivileged:bookworm-perl                                                       0.5s
 => [linux/arm64 internal] load metadata for docker.io/nginxinc/nginx-unprivileged:bookworm-perl                                                       0.5s
 => [internal] load .dockerignore                                                                                                                      0.0s
 => => transferring context: 2B                                                                                                                        0.0s
 => [internal] load build context                                                                                                                      0.0s
 => => transferring context: 345B                                                                                                                      0.0s
 => [linux/arm64 1/6] FROM docker.io/nginxinc/nginx-unprivileged:bookworm-perl@sha256:39b32e6580042fa1cdd8723c272c26feac6dff2d0e3abaf4ca5c0a6737bab38  0.0s
 => => resolve docker.io/nginxinc/nginx-unprivileged:bookworm-perl@sha256:39b32e6580042fa1cdd8723c272c26feac6dff2d0e3abaf4ca5c0a6737bab38f             0.0s
 => [linux/amd64 1/6] FROM docker.io/nginxinc/nginx-unprivileged:bookworm-perl@sha256:39b32e6580042fa1cdd8723c272c26feac6dff2d0e3abaf4ca5c0a6737bab38  0.0s
 => => resolve docker.io/nginxinc/nginx-unprivileged:bookworm-perl@sha256:39b32e6580042fa1cdd8723c272c26feac6dff2d0e3abaf4ca5c0a6737bab38f             0.0s
 => CACHED [linux/arm64 2/6] COPY --chown=nginx:root Dockerfiles/utils/art-nginx/proxy_sets.conf /etc/nginx/proxy_sets.conf                            0.0s
 => CACHED [linux/arm64 3/6] COPY --chown=nginx:root Dockerfiles/utils/art-nginx/dhparam.pem /etc/ssl/certs/dhparam.pem                                0.0s
 => CACHED [linux/arm64 4/6] WORKDIR /etc/nginx/templates                                                                                              0.0s
 => CACHED [linux/arm64 5/6] COPY --chown=nginx:root Dockerfiles/utils/art-nginx/default.conf.template /etc/nginx/templates/default.conf.template      0.0s
 => CACHED [linux/arm64 6/6] WORKDIR /etc/nginx                                                                                                        0.0s
 => CACHED [linux/amd64 2/6] COPY --chown=nginx:root Dockerfiles/utils/art-nginx/proxy_sets.conf /etc/nginx/proxy_sets.conf                            0.0s
 => CACHED [linux/amd64 3/6] COPY --chown=nginx:root Dockerfiles/utils/art-nginx/dhparam.pem /etc/ssl/certs/dhparam.pem                                0.0s
 => CACHED [linux/amd64 4/6] WORKDIR /etc/nginx/templates                                                                                              0.0s
 => CACHED [linux/amd64 5/6] COPY --chown=nginx:root Dockerfiles/utils/art-nginx/default.conf.template /etc/nginx/templates/default.conf.template      0.0s
 => CACHED [linux/amd64 6/6] WORKDIR /etc/nginx                                                                                                        0.0s
 => exporting to image                                                                                                                                 5.5s
 => => exporting layers                                                                                                                                0.0s
 => => exporting manifest sha256:602dfc9c77642a7b2cc6e3b881cb559f9209a0d6a6259da989f5930bc11e9697                                                      0.0s
 => => exporting config sha256:82e8089194c0f2fdad6aaf9c55e83f5ffd4f09e86d3343ac191c2a203b4b9069                                                        0.0s
 => => exporting attestation manifest sha256:7e6e489139fd2939ac653c73b4de1e0695b9b810edb8886d1bcbd881c4680c98                                          0.0s
 => => exporting manifest sha256:227062a21af589d8d9c2e9664f5716c47dc524f60d25a5c914e17e5777bff9a6                                                      0.0s
 => => exporting config sha256:ea156fcb51028ce3a0235618b2ddee98635efe35ca1f21834619381a8c15ff06                                                        0.0s
 => => exporting attestation manifest sha256:db7ef9d77d288be9e8dc256da441c7a88b14260a8989ceed096f3dd0eadfe4fd                                          0.0s
 => => exporting manifest list sha256:5e243b9b833bc3b058a43605cc53ec688c1a38d9ca0f7b4a32100dd220f148ae                                                 0.0s
 => => naming to docker.io/ziobizio81/bizio:test-nginx                                                                                                 0.0s
 => => unpacking to docker.io/ziobizio81/bizio:test-nginx                                                                                              0.0s
 => => pushing layers                                                                                                                                  3.2s
 => => pushing manifest for docker.io/ziobizio81/bizio:test-nginx@sha256:5e243b9b833bc3b058a43605cc53ec688c1a38d9ca0f7b4a32100dd220f148ae              2.2s
 => [auth] ziobizio81/bizio:pull,push token for registry-1.docker.io                                                                                   0.0s
 => pushing ziobizio81/bizio:test-nginx with docker                                                                                                    3.5s
 => => pushing layer 2ec3c68ca7ba                                                                                                                      3.4s
 => => pushing layer 1338974216f8                                                                                                                      3.4s
 => => pushing layer 67a81010326b                                                                                                                      3.4s
 => => pushing layer cffd5e6a7799                                                                                                                      3.4s
 => => pushing layer ed5348a8c109                                                                                                                      3.4s
 => => pushing layer 19a821968632                                                                                                                      3.4s
 => => pushing layer b6212c855845                                                                                                                      3.4s
 => => pushing layer c661bfeae178                                                                                                                      3.4s
 => => pushing layer 6c249a1215e3                                                                                                                      3.4s
 => => pushing layer d51c377d94da                                                                                                                      3.4s
 => => pushing layer 326a35205ee2                                                                                                                      3.4s
 => => pushing layer 179c4746a37b                                                                                                                      3.4s
 => => pushing layer 36af18e7311e                                                                                                                      3.4s
 => => pushing layer e9cd0ed1fc65                                                                                                                      3.4s
 => => pushing layer 4f4fb700ef54                                                                                                                      3.4s
 => => pushing layer b4f23b55d2d5                                                                                                                      3.4s
 => => pushing layer 91dd5c25c39b                                                                                                                      3.4s
 => => pushing layer 09b1426e7e82                                                                                                                      3.4s
 => => pushing layer 78f3fb170bbb                                                                                                                      3.4s
 => => pushing layer 3a8cb4a965d3                                                                                                                      3.4s
 => => pushing layer 085cdded6fb5                                                                                                                      3.4s
 => => pushing layer 11daa0b242e2                                                                                                                      3.4s
 => => pushing layer 493573d18c17                                                                                                                      3.4s
 => => pushing layer 781931fc4095                                                                                                                      3.4s
 => => pushing layer 7cf63256a31a                                                                                                                      3.4s
 => => pushing layer 654212a1ea3d                                                                                                                      3.4s
 => => pushing layer 46cbc9b0a7c9                                                                                                                      3.4s
 => => pushing layer 23bd0d32ea0c                                                                                                                      3.4s

[tonistiigi]

This seems to be side-effect of #3023 bug if I'm looking at the progress (I don't know where the build vs bake difference comes from though). Update to v0.22.0 and try again.