test: docker meta tags

.github/workflows/bake.yml

@@ -68,20 +68,27 @@ jobs:
       # - name: Set up QEMU
       #   uses: docker/setup-qemu-action@v3
 
-      # - name: Set up Docker Buildx
-      #   uses: docker/setup-buildx-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
 
       - name: Image Metadata
         id: meta
         uses: docker/metadata-action@v5
         with:
-          # images: |
-          #   ${{ github.repository_owner }}/${{ inputs.target }}
-          #   ghcr.io/${{ github.repository_owner }}/${{ inputs.target }}
           tags: |
             type=raw,value=latest,enable={{is_default_branch}}
             type=schedule,pattern={{date 'YYYY-MM-DD'}}
             type=sha
+            type=raw,value=r-4.3.3
+
+      - name: Test Bake
+        run: |
+          TAG_LIST=${DOCKER_METADATA_OUTPUT_TAGS} \
+          docker buildx bake \
+            -f docker-bake.hcl \
+            -f ${{ steps.meta.outputs.bake-file-labels }} \
+            --print \
+            default
 
       # - name: Build and push
       #   uses: docker/bake-action@v5

docker-bake.hcl

@@ -10,6 +10,10 @@ variable "TAG" {
   default = "test"
 }
 
+variable "TAG_LIST" {
+  default = "test"
+}
+
 function "tags" {
   params = [name, suffix]
   result = ["${REGISTRY}/${name}:${TAG}${suffix}"]
@@ -41,7 +45,10 @@ function "cache-to" {
   ]
 }
 
+target "docker-metadata-action" {}
+
 target "default" {
+  inherits = ["docker-metadata-action"]
   context = "."
   secret = ["type=env,id=GITHUB_TOKEN"]
   labels = {
@@ -51,6 +58,7 @@ target "default" {
     "org.opencontainers.image.vendor": "CourseKata",
     "org.opencontainers.image.authors": "Adam Blake <[email protected]>"
   }
+  tags = [ for t in split(",", "${TAG_LIST}") : "myimage:${t}" ]
 }
 
 target "amd64" {