GPT5 - Refactor build-docker-image workflow: streamline buildx setup, switch to inline build command, and improve cleanup process.

.gitea/workflows/build-docker-image.yml

@@ -8,19 +8,16 @@ on:
 jobs:
   build-server:
     runs-on: ubuntu-24.04
-    services:
-      docker:
-        image: docker:dind
-        options: --privileged --security-opt seccomp=unconfined
     steps:
-      # 1. Check out the repo
       - uses: actions/checkout@v4
 
-      # 2. Set up Docker Buildx (recommended for advanced caching)
-      - name: Set up Docker Buildx
+      - name: Set up Docker Buildx (ephemeral)
         uses: docker/setup-buildx-action@v3
+        with:
+          install: true
+          driver-opts: network=host
+          buildkitd-flags: --debug
 
-      # 3. Log in to your container registry
       - name: Log in to registry
         uses: docker/login-action@v2
         with:
@@ -28,22 +25,22 @@ jobs:
           username: ${{ secrets.REGISTRY_USERNAME }}
           password: ${{ secrets.REGISTRY_PASSWORD }}
 
-      # 4. Lowercase the repository name
       - name: Set lowercase repo name
         run: echo "REPO_NAME_LOWER=$(echo '${{ github.event.repository.name }}' | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
 
-      # 5. Build & push the server image, using remote cache
-      - name: Build and push server image
-        uses: docker/build-push-action@v4
-        with:
-          context:    VirtualDDNSRouter.Server
-          file:       VirtualDDNSRouter.Server/Dockerfile
-          push:       true
-          tags:       ${{ secrets.REGISTRY_URL }}/${{ github.repository_owner }}/${{ env.REPO_NAME_LOWER }}:latest-server
-          cache-from: type=registry,ref=${{ secrets.REGISTRY_URL }}/${{ github.repository_owner }}/${{ env.REPO_NAME_LOWER }}:buildcache
-          cache-to:   type=registry,ref=${{ secrets.REGISTRY_URL }}/${{ github.repository_owner }}/${{ env.REPO_NAME_LOWER }}:buildcache,mode=max
-          
-      - name: Clean up Docker in dind
-        run: docker builder prune -af
-
+      - name: Build and push (no local cache)
+        run: |
+          docker buildx build \
+            --pull \
+            --no-cache \
+            --file VirtualDDNSRouter.Server/Dockerfile \
+            --tag ${{ secrets.REGISTRY_URL }}/${{ github.repository_owner }}/${{ env.REPO_NAME_LOWER }}:latest-server \
+            --cache-from type=registry,ref=${{ secrets.REGISTRY_URL }}/${{ github.repository_owner }}/${{ env.REPO_NAME_LOWER }}:buildcache \
+            --cache-to type=registry,ref=${{ secrets.REGISTRY_URL }}/${{ github.repository_owner }}/${{ env.REPO_NAME_LOWER }}:buildcache,mode=max \
+            --push \
+            VirtualDDNSRouter.Server
 
+      - name: Remove builder to delete all cache
+        run: |
+          BUILDER=$(docker buildx ls | awk '/\*/ {print $1}')
+          docker buildx rm "$BUILDER" || true