ci: add Gitea Actions workflow for container build and registry publish

.gitea/workflows/docker-publish.yml

@@ -0,0 +1,36 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    env:
+      DOCKER_HOST: unix:///var/run/docker.sock
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
+      - name: Log in to Gitea Registry
+        run: echo "${{ secrets.PUSH_TOKEN }}" | docker login git.pengzhan.dev -u "${{ github.actor }}" --password-stdin
+
+      - name: Build and push Docker image
+        run: |
+          REPO_LOWER=$(echo "${{ github.repository }}" | tr '[:upper:]' '[:lower:]')
+          IMAGE_NAME="git.pengzhan.dev/$REPO_LOWER"
+          REPO_URL="${{ github.server_url }}/${{ github.repository }}"
+          
+          echo "Building image: $IMAGE_NAME with source link: $REPO_URL"
+          
+          docker build \
+            --network host \
+            --label "org.opencontainers.image.source=$REPO_URL" \
+            -t $IMAGE_NAME:latest \
+            -t $IMAGE_NAME:${{ github.sha }} .
+          
+          docker push $IMAGE_NAME:latest
+          docker push $IMAGE_NAME:${{ github.sha }}