Push image to GHCR as well

Author: erhhung

.github/workflows/ci.yaml

@@ -10,7 +10,7 @@ on:
       - '[2-9][0-9].[0-1][0-9].?[0-3]?[0-9]?'
 
 env:
-  REGISTRY_IMAGE: erhhung/al2023-devops
+  IMAGE_NAME: erhhung/al2023-devops
   IMAGE_LABELS: |
     org.opencontainers.image.authors=Erhhung Yuan <[email protected]>
 
@@ -124,7 +124,9 @@ jobs:
         id: metadata
         uses: docker/metadata-action@v5
         with:
-          images: ${{ env.REGISTRY_IMAGE }}
+          images: |
+            docker.io/${{ env.IMAGE_NAME }}
+            ghcr.io/${{ env.IMAGE_NAME }}
           labels: ${{ env.IMAGE_LABELS }}
 
       # https://github.com/aws-actions/configure-aws-credentials
@@ -148,9 +150,19 @@ jobs:
         id: docker-hub
         uses: docker/login-action@v3
         with:
+          registry: docker.io
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
           password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
 
+      # https://github.com/docker/login-action
+      - name: Log in to GitHub GHCR
+        id: ghcr
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ github.token }}
+
       # https://github.com/docker/build-push-action
       - name: Build and Push by Digest
         id: build
@@ -160,7 +172,7 @@ jobs:
         with:
           platforms: ${{ matrix.platform }}
           labels: ${{ steps.metadata.outputs.labels }}
-          outputs: type=image,name=${{ env.REGISTRY_IMAGE }},push-by-digest=true,name-canonical=true,push=true
+          outputs: type=image,name=${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
 
       # create 0-byte file named /tmp/digests/<digest>
       - name: Export Digest
@@ -209,30 +221,42 @@ jobs:
         id: metadata
         uses: docker/metadata-action@v5
         with:
-          images: ${{ env.REGISTRY_IMAGE }}
+          images: |
+            docker.io/${{ env.IMAGE_NAME }}
+            ghcr.io/${{ env.IMAGE_NAME }}
           labels: ${{ env.IMAGE_LABELS }}
 
       # https://github.com/docker/login-action
       - name: Log in to Docker Hub
         id: docker-hub
         uses: docker/login-action@v3
         with:
+          registry: docker.io
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
           password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
 
+      # https://github.com/docker/login-action
+      - name: Log in to GitHub GHCR
+        id: ghcr
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ github.token }}
+
       - name: Create Manifests and Push
         id: manifests
         working-directory: /tmp/digests
         run: |
           tags=($(jq -cr '[.tags[] | "-t \(.)"] | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON"))
-          images=($(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *))
+          images=($(printf '${{ env.IMAGE_NAME }}@sha256:%s ' *))
           docker buildx imagetools create "${tags[@]}" "${images[@]}"
 
       # confirm merged image manifests
       - name: Inspect Image
         id: inspect
         run: |
-          tag="${{ env.REGISTRY_IMAGE }}:$DOCKER_METADATA_OUTPUT_VERSION"
+          tag="${{ env.IMAGE_NAME }}:$DOCKER_METADATA_OUTPUT_VERSION"
           docker buildx imagetools inspect $tag
 
   terminate-runner:

Dockerfile

@@ -454,6 +454,16 @@ EOT
 # FINAL step of Dockerfile: run custom "versions.sh" script
 # (copied in prior stage) to generate "/root/.versions.json":
 # manifest of all installed tools and their current versions
-RUN /tmp/versions.sh && rm -rf /tmp/*
+RUN <<'EOT'
+set -e
+echo "::group::Generate .versions.json"
+( set -uxo pipefail
+
+  /tmp/versions.sh
+  dnf clean all
+  rm -rf /tmp/* /var/log/* /var/cache/dnf
+)
+echo "::endgroup::"
+EOT
 
 CMD ["bash", "--login"]

README.md

@@ -34,6 +34,7 @@ As well as the following utilities:
 Size is approximately 2.5 GB.
 
 Images are available in the following repositories:
-- Docker Hub: [`erhhung/al2023-devops`](https://hub.docker.com/repository/docker/erhhung/al2023-devops)
+- Docker Hub: [`docker.io/erhhung/al2023-devops`](https://hub.docker.com/repository/docker/erhhung/al2023-devops)
+- GitHub Container Registry: [`ghcr.io/erhhung/al2023-devops`](https://github.com/users/erhhung/packages/container/al2023-devops)
 
 Version information about installed components can be found in the Docker image at `/root/.versions.json`.