add automatic docker building

.github/workflows/docker.yml

@@ -0,0 +1,49 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*.*.*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract version tag
+        id: version
+        run: |
+          if [[ "${GITHUB_REF}" == refs/tags/v* ]]; then
+            echo "VERSION_TAG=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Set image tags
+        id: tags
+        run: |
+          IMAGE_NAME=${{ secrets.DOCKER_IMAGE_NAME }}
+          TAGS="${IMAGE_NAME}:latest"
+          if [ -n "${{ steps.version.outputs.VERSION_TAG }}" ]; then
+            TAGS="$TAGS,${IMAGE_NAME}:${{ steps.version.outputs.VERSION_TAG }}"
+          fi
+          echo "tags=$TAGS" >> $GITHUB_OUTPUT
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.tags.outputs.tags }}