ci: add container-image.yml

for building and pushing container to ghcr.io

.github/workflows/container-image.yml

@@ -0,0 +1,45 @@
+name: Build and push container image
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+permissions:
+  contents: read
+  packages: write
+
+# docker buildx to build and push multi-arch images
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Docker Setup Buildx
+        uses: docker/setup-buildx-action@v2
+        with:
+          platforms: linux/amd64,linux/arm64/v8
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ github.token }}
+      - name: Lowercase repo name
+        id: repository
+        run: |
+          echo "LOWERCASE_REPO=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_OUTPUT
+      - name: Build and push using docker Buildx
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ghcr.io/${{ steps.repository.outputs.LOWERCASE_REPO }}:${{ github.sha }},ghcr.io/${{ steps.repository.outputs.LOWERCASE_REPO }}:latest