github action for creating docker image builds

merge pull request #151 from dumbmoron/create-docker-github-action

.github/workflows/docker.yml

@@ -0,0 +1,55 @@
+name: Build Docker image
+
+on:
+  workflow_dispatch:
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+        
+      - name: Log in to the Container registry
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Get version from package.json
+        id: package-version
+        uses: martinbeentjes/npm-get-version-action@v1.3.1
+      - name: Get short commit hash
+        id: commit-hash
+        run: echo "commit_short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          tags: |
+            type=raw,value=latest
+            type=raw,value=${{ steps.package-version.outputs.current-version }}
+            type=raw,value=${{ steps.package-version.outputs.current-version }}-${{ steps.commit-hash.outputs.commit_short }}
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64,linux/arm/v7
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}