feat: add GitHub Actions workflow for building and pushing Docker images

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

@@ -0,0 +1,76 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main
+      - beta
+      - dev
+    paths:
+      - 'src/**'
+      - 'helm/Chart.yaml'
+      - 'config.yaml'
+      - 'Dockerfile'
+      - 'requirements.txt'
+      - 'entrypoint.sh'
+      - '.github/workflows/docker-build-push.yml'
+    tags:
+      - 'v*.*.*'
+  release:
+    types: [published]
+  workflow_dispatch:
+
+env:
+  REGISTRY: ${{ vars.DOCKER_REGISTRY }}
+  IMAGE_NAME: ${{ vars.DOCKER_IMAGE_NAME }}
+
+jobs:
+  build-and-push:
+    runs-on: self-hosted
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract appVersion from Chart.yaml
+        id: chart_version
+        run: |
+          APP_VERSION=$(grep '^appVersion:' helm/Chart.yaml | awk '{print $2}' | tr -d '"')
+          echo "version=$APP_VERSION" >> $GITHUB_OUTPUT
+
+      - name: Extract metadata (tags, labels)
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,value=${{ steps.chart_version.outputs.version }},enable={{is_default_branch}}
+            type=raw,value=${{ steps.chart_version.outputs.version }}-${{ github.ref_name }},enable=${{ github.ref_name != 'main' }}
+            type=raw,value=latest,enable={{is_default_branch}}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache
+          cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache,mode=max
+
+      - name: Image digest
+        run: echo ${{ steps.meta.outputs.digest }}