docker image building and publishing workflow

.github/workflows/docker-build.yaml

@@ -0,0 +1,44 @@
+name: Build and push container image
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: sunu/nfs-ganesha
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Log in to the container registry
+      uses: docker/login-action@v3
+      with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@v3
+      with:
+        install: true
+
+    - name: Build and push container image
+      uses: docker/build-push-action@v6
+      with:
+        context: ./nfs-ganesha
+        file: ./nfs-ganesha/Dockerfile
+        platforms: linux/amd64,linux/arm64
+        push: true
+        tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:{{ github.sha }}, ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+        labels: org.opencontainers.image.source="${{ github.repository }}"