docker: refactor to use bake/buildx, new generic images

.github/workflows/docker.yml

@@ -21,9 +21,47 @@ jobs:
           password: ${{ secrets.CR_PAT }}
       - name: Set version
         run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
-      - name: Build and push
-        id: docker_build
-        uses: docker/build-push-action@v2
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: |
+            ghcr.io/${{ github.repository_owner }}/void-updates
+          tags: |
+            type=sha,prefix=
+            type=raw,value=latest
+            type=raw,value=${{env.RELEASE_VERSION}},priority=1000
+          flavor: latest=false
+          labels: |
+            org.opencontainers.image.authors=Void Linux team and contributors
+            org.opencontainers.image.url=https://voidlinux.org
+            org.opencontainers.image.source=https://github.com/${{ github.repository }}
+            org.opencontainers.image.vendor=Void Linux
+            org.opencontainers.image.title=void-updates
+            org.opencontainers.image.description=Update check system for void-packages
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to GCHR
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push images
+        id: build_and_push
+        uses: docker/bake-action@v3
         with:
           push: true
-          tags: "ghcr.io/${{ github.repository }}:${{ env.RELEASE_VERSION }}"
+          targets: void-updates
+          files: |
+            services/pkg/docker-bake.hcl
+            ${{ steps.meta.outputs.bake-file }}
+          set: |
+            _common.cache-to=type=gha
+            _common.cache-from=type=gha

Dockerfile

@@ -1,6 +1,6 @@
-ARG BASE=ghcr.io/void-linux/void-linux:20220530RC01-full-x86_64-musl
+ARG BASE=ghcr.io/void-linux/void-musl-full:20231003R1
 FROM ${BASE}
-RUN xbps-install -yMu xbps && xbps-install -yMU git bash curl util-linux findutils
+RUN xbps-install -yMu xbps && xbps-install -yMu git bash curl util-linux findutils
 COPY void-updates.sh /usr/local/bin/void-updates
 COPY entrypoint.sh /entrypoint
 

docker-bake.hcl

@@ -0,0 +1,15 @@
+target "docker-metadata-action" {}
+
+target "_common" {
+  inherits = ["docker-metadata-action"]
+  dockerfile = "Dockerfile"
+  cache-to = ["type=local,dest=/tmp/buildx-cache"]
+  cache-from = ["type=local,src=/tmp/buildx-cache"]
+}
+
+target "void-updates" {
+  inherits = ["_common"]
+  platforms = ["linux/amd64", "linux/arm64", "linux/arm/v7", "linux/arm/v6"]
+  args = { "LIBC" = "musl" }
+}
+