Enable CI builds

.github/workflows/ci.yaml

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+name: CI
+on:
+  pull_request:
+    types: [opened, reopened]
+  push:
+    branches: ["**"]
+
+jobs:
+  image:
+    name: Build the image
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - uses: docker/setup-qemu-action@v2
+      - uses: docker://ghcr.io/errordeveloper/imagine:2ac274f.8fed464-dev@sha256:fb1b83b0b83701990dbf9449058c7ad611e70ec15cb42bb394260a71daeb391f
+        env:
+          ANY_REGISTRY_DISABLE: true
+          DOCKER_HUB_PUBLIC_ACCESS_ONLY: true
+          GHCR_USERNAME: $GITHUB_ACTOR
+          GHCR_PASSWORD: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          entrypoint: imagine
+          args: build --platform linux/amd64,linux/arm64 --config build.yaml --upstream-branch origin/main --registry ghcr.io/docker --push

Dockerfile

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+ARG GOLANG_IMAGE=docker.io/library/golang:1.20@sha256:bc5f0b5e43282627279fe5262ae275fecb3d2eae3b33977a7fd200c7a760d6f1
+
+FROM --platform=${BUILDPLATFORM} ${GOLANG_IMAGE} as builder-base
+
+WORKDIR /src
+ENV GOPRIVATE=github.com/docker
+
+RUN --mount=type=bind,target=/src --mount=target=/root/.cache,type=cache --mount=target=/go/pkg/mod,type=cache \
+    go vet ./...
+
+RUN --mount=type=bind,target=/src --mount=target=/root/.cache,type=cache --mount=target=/go/pkg/mod,type=cache \
+    go test ./...
+
+FROM builder-base as builder-arch
+
+ARG TARGETOS
+ARG TARGETARCH
+
+RUN mkdir -p /out/${TARGETOS}/${TARGETARCH}/usr/bin
+
+RUN --mount=type=bind,target=/src --mount=target=/root/.cache,type=cache --mount=target=/go/pkg/mod,type=cache \
+    CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} \
+        go build -ldflags '-s -w' -o /out/${TARGETOS}/${TARGETARCH}/usr/bin/tape ./tape
+
+FROM scratch
+
+ARG TARGETOS
+ARG TARGETARCH
+
+# TODO: include CA certificates
+WORKDIR /var/lib/buildkit-operator
+COPY --from=builder-arch /out/${TARGETOS}/${TARGETARCH}/usr/bin /usr/bin
+
+USER 65534:65534
+ENTRYPOINT ["/usr/bin/tape"]

Dockerfile.dockerignore

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+*
+
+!go.mod
+!go.sum
+
+!vendor/
+
+!tape/
+
+!manifest/
+!oci/

build.yaml

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+kind: ImagineBuildConfig
+apiVersion: v1alpha1
+
+spec:
+  name: labs-brow-tape
+  dir: ./