Build and publish Docker image in CI

.github/workflows/release.yml

@@ -2,12 +2,15 @@ name: Release
 
 on:
   push:
+    branches:
+      - master
     tags:
       - 'v*.*.*'
 
 jobs:
   release:
-    name: Release
+    name: Release GitHub
+    if: ${{ startsWith(github.ref, 'refs/tags/v') }}
     strategy:
       matrix:
         os: [ ubuntu-latest ]
@@ -56,3 +59,54 @@ jobs:
         args: release --rm-dist
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  docker:
+    name: Build and publish Docker image
+    runs-on: ubuntu-latest
+    env:
+      IMAGE_REPOSITORY: ${{ github.repository }}
+      VERSION: ${{ github.ref_name }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Build image
+        run: docker build -t "$IMAGE_REPOSITORY" .
+      - name: Build k6 binary
+        run: |
+            docker run --rm -u "$(id -u):$(id -g)" -v "$PWD:/xk6" \
+              "$IMAGE_REPOSITORY" build master \
+              --with github.com/mostafa/xk6-kafka \
+              --with github.com/grafana/xk6-output-influxdb
+      - name: Check k6 binary
+        run: |
+            ./k6 version
+            ./k6 version | grep -qz 'xk6-output-influxdb.*xk6-kafka'
+
+      - name: Log into ghcr.io
+        if: ${{ github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/v') }}
+        run: |
+          # Log into GitHub Container Registry
+          echo "${{ secrets.GITHUB_TOKEN }}" | docker login https://ghcr.io -u ${{ github.actor }} --password-stdin
+
+      - name: Publish master image to ghcr.io
+        if: ${{ github.ref == 'refs/heads/master' }}
+        run: |
+          echo "Publish as ghcr.io/$IMAGE_REPOSITORY:$VERSION"
+          docker tag "$IMAGE_REPOSITORY" "ghcr.io/$IMAGE_REPOSITORY:master"
+          docker push "ghcr.io/$IMAGE_REPOSITORY:master"
+
+      - name: Publish tagged version image to ghcr.io
+        if: ${{ startsWith(github.ref, 'refs/tags/v') }}
+        run: |
+          VERSION="${VERSION#v}"
+          echo "Publish as ghcr.io/${IMAGE_REPOSITORY}:${VERSION}"
+          docker tag "$IMAGE_REPOSITORY" "ghcr.io/${IMAGE_REPOSITORY}:${VERSION}"
+          docker push "ghcr.io/${IMAGE_REPOSITORY}:${VERSION}"
+          # We also want to tag the latest stable version as latest
+          if [[ ! "$VERSION" =~ (RC|rc) ]]; then
+            echo "Publish as ghcr.io/${IMAGE_REPOSITORY}:latest"
+            docker tag "$IMAGE_REPOSITORY" "ghcr.io/${IMAGE_REPOSITORY}:latest"
+            docker push "ghcr.io/${IMAGE_REPOSITORY}:latest"
+          fi