ci: add Docker build and push workflow

.github/workflows/build-push-docker.yml

@@ -0,0 +1,47 @@
+name: Build and Push Docker Image
+
+on:
+    push:
+        branches: [main]
+    pull_request:
+        types: [ "closed" ]
+        branches: [ "main" ]            
+
+env:
+    REGISTRY: ghcr.io
+    IMAGE_NAME: ${{ github.repository }}
+
+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 GHCR
+              uses: docker/login-action@v3
+              with:
+                registry: ${{ env.REGISTRY }}
+                username: ${{ github.actor }}
+                password: ${{ secrets.GITHUB_TOKEN }}
+
+            - name: Extract Docker metadata
+              id: meta
+              uses: docker/metadata-action@v5
+              with:
+                images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+                tags: |
+                    type=raw,value=latest
+                    type=sha
+
+            - name: Build and push Docker image
+              uses: docker/build-push-action@v5
+              with:
+                context: .
+                push: true
+                tags: ${{ steps.meta.outputs.tags }}
+                labels: ${{ steps.meta.outputs.labels }}