Build multi-platform docker images

Also fixes bug with "/" characters in image names, although chaincode
labels now have the same issue since they are used in filenames!

Signed-off-by: James Taylor <jamest@uk.ibm.com>

.github/workflows/docker-build.yml

@@ -3,77 +3,81 @@ name: Docker CI
 on:
   workflow_call:
     inputs:
-      imagename:
-        description: 'A Docker image name passed from the caller workflow'
+      image-name:
+        description: 'A Docker image name passed from the caller workflow.'
         required: true
         type: string
       path:
-        description: 'A path containing a Dockerfile passed from the caller workflow'
+        description: 'A path containing a Dockerfile passed from the caller workflow.'
         required: true
         type: string
-      chaincode:
-        description: 'A boolean indicating whether to create a chaincode package passed from the caller workflow'
+      chaincode-label:
+        description: 'An optional chaincode label passed from the caller workflow. If present, will prepare a chaincode package.'
         required: false
-        default: false
-        type: boolean
+        type: string
 
 jobs:
   build:
     runs-on: ubuntu-latest
     outputs:
-      image_digest: ${{ steps.publish_image.outputs.image_digest }}
+      image_digest: ${{ steps.push.outputs.digest }}
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Build Docker image
-      run: |
-        docker build ${DOCKER_BUILD_PATH} --file ${DOCKER_BUILD_PATH}/Dockerfile --label "org.opencontainers.image.revision=${GITHUB_SHA}" --tag ${IMAGE_NAME}
-        docker tag ${IMAGE_NAME} ghcr.io/hyperledger-labs/${IMAGE_NAME}:${GITHUB_SHA}
-        if [ "${GITHUB_REF:0:10}" = "refs/tags/" ]; then
-          docker tag ${IMAGE_NAME} ghcr.io/hyperledger-labs/${IMAGE_NAME}:${GITHUB_REF_NAME}
-          docker tag ${IMAGE_NAME} ghcr.io/hyperledger-labs/${IMAGE_NAME}:latest
-        fi
-      env:
-        DOCKER_BUILD_PATH: ${{ inputs.path }}
-        IMAGE_NAME: ${{ inputs.imagename }}
-    - name: Publish Docker image
-      id: publish_image
-      if: github.event_name != 'pull_request'
-      run: |
-        echo ${DOCKER_PW} | docker login ghcr.io -u ${DOCKER_USER} --password-stdin
-        docker push ghcr.io/hyperledger-labs/${IMAGE_NAME}:${GITHUB_SHA}
-        if [ "${GITHUB_REF:0:10}" = "refs/tags/" ]; then
-          docker push ghcr.io/hyperledger-labs/${IMAGE_NAME}:${GITHUB_REF_NAME}
-          docker push ghcr.io/hyperledger-labs/${IMAGE_NAME}:latest
-        fi
-        echo ::set-output name=image_digest::$(docker inspect --format='{{index .RepoDigests 0}}' ghcr.io/hyperledger-labs/${IMAGE_NAME}:${GITHUB_SHA} | cut -d'@' -f2)
-      env:
-        IMAGE_NAME: ${{ inputs.imagename }}
-        DOCKER_USER: ${{ github.actor }}
-        DOCKER_PW: ${{ secrets.GITHUB_TOKEN }}
+    - name: Checkout
+      uses: actions/checkout@v3
+    - name: Docker meta
+      id: meta
+      uses: docker/metadata-action@v4
+      with:
+        images: |
+          ${{ inputs.image-name }}
+        tags: |
+          type=semver,pattern={{version}}
+          type=semver,pattern={{major}}.{{minor}}
+          type=semver,pattern={{major}}
+          type=sha,format=long
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v2
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.repository_owner }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+    - name: Build and push
+      id: push
+      uses: docker/build-push-action@v3
+      with:
+        context: .
+        platforms: linux/amd64,linux/arm64
+        push: ${{ github.event_name != 'pull_request' }}
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
 
   package:
-    if: inputs.chaincode && needs.build.outputs.image_digest != ''
+    if: inputs.chaincode-label != '' && needs.build.outputs.image_digest != ''
     needs: build
     runs-on: ubuntu-latest
 
     steps:
     - name: Create package
       uses: hyperledgendary/package-k8s-chaincode-action@ba10aea43e3d4f7991116527faf96e3c2b07abc7
       with:
-        chaincode-label: ${{ inputs.imagename }}
-        chaincode-image: ghcr.io/hyperledger-labs/${{ inputs.imagename }}
+        chaincode-label: ${{ inputs.chaincode-label }}
+        chaincode-image: ${{ inputs.image-name }}
         chaincode-digest: ${{ needs.build.outputs.image_digest }}
 
     - name: Rename package
       if: startsWith(github.ref, 'refs/tags/v')
-      run: mv ${IMAGE_NAME}.tgz ${IMAGE_NAME}-${CHAINCODE_VERSION}.tgz
+      run: mv ${CHAINCODE_LABEL}.tgz ${CHAINCODE_LABEL}-${CHAINCODE_VERSION}.tgz
       env:
-        IMAGE_NAME: ${{ inputs.imagename }}
+        CHAINCODE_LABEL: ${{ inputs.chaincode-label }}
         CHAINCODE_VERSION: ${{ github.ref_name }}
 
     - name: Release package
       if: startsWith(github.ref, 'refs/tags/v')
       uses: softprops/action-gh-release@v1
       with:
-        files: ${{ inputs.imagename }}-${{ github.ref_name }}.tgz
+        files: ${{ inputs.chaincode-label }}-${{ github.ref_name }}.tgz

.github/workflows/go-contract-image.yml

@@ -19,6 +19,6 @@ jobs:
     name: Docker build
     uses: ./.github/workflows/docker-build.yml
     with:
-      imagename: go-contract
+      image-name: ghcr.io/hyperledger-labs/fabric-builder-k8s/sample-go-contract
       path: samples/go-contract
-      chaincode: true
+      chaincode-label: go-contract

.github/workflows/java-contract-image.yml

@@ -19,6 +19,6 @@ jobs:
     name: Docker build
     uses: ./.github/workflows/docker-build.yml
     with:
-      imagename: java-contract
+      image-name: ghcr.io/hyperledger-labs/fabric-builder-k8s/sample-java-contract
       path: samples/java-contract
-      chaincode: true
+      chaincode-label: java-contract

.github/workflows/node-contract-image.yml

@@ -19,6 +19,6 @@ jobs:
     name: Docker build
     uses: ./.github/workflows/docker-build.yml
     with:
-      imagename: node-contract
+      image-name: ghcr.io/hyperledger-labs/fabric-builder-k8s/sample-node-contract
       path: samples/node-contract
-      chaincode: true
+      chaincode-label: node-contract

.github/workflows/peer-image.yml

@@ -23,5 +23,5 @@ jobs:
     name: Docker build
     uses: ./.github/workflows/docker-build.yml
     with:
-      imagename: k8s-fabric-peer
+      image-name: ghcr.io/hyperledger-labs/fabric-builder-k8s/k8s-fabric-peer
       path: .