build cache

.gitea/workflows/ci.yml

@@ -65,12 +65,32 @@ jobs:
         echo "Testing registry connectivity..."
         curl -s "http://$LOCAL_REGISTRY/v2/" && echo "✅ Registry accessible via HTTP" || echo "❌ Registry not accessible"
 
-    - name: Build Docker image
+    - name: Build Docker image with caching
       run: |
-        echo "Building Docker image..."
-        docker build -t nfoguard:latest .
-        docker tag nfoguard:latest nfoguard:${{ github.sha }}
-        echo "Docker image built and tagged successfully"
+        echo "Building Docker image with layer caching..."
+        LOCAL_REGISTRY="192.168.253.221:3000"
+        CACHE_IMAGE="$LOCAL_REGISTRY/jskala/nfoguard:buildcache"
+        
+        # Enable Docker BuildKit for better caching
+        export DOCKER_BUILDKIT=1
+        
+        # Try to pull previous image for cache
+        echo "Attempting to pull cache image..."
+        docker pull "$CACHE_IMAGE" 2>/dev/null && echo "✅ Cache image pulled" || echo "ℹ️ No cache image found (first build)"
+        
+        # Build with cache-from (if available) and cache-to
+        echo "Building with layer caching..."
+        docker build \
+          --cache-from="$CACHE_IMAGE" \
+          --tag nfoguard:latest \
+          --tag nfoguard:${{ github.sha }} \
+          --tag "$CACHE_IMAGE" \
+          .
+        
+        echo "Docker image built and tagged successfully with caching"
+        
+        # Show layer info
+        docker history nfoguard:latest --no-trunc | head -10
 
     - name: Login and Push to Gitea registry (local IP only)
       run: |
@@ -128,13 +148,16 @@ jobs:
           fi
         fi
         
-        # Tag for local registry
+        # Tag for local registry (cache image already tagged in build step)
         docker tag nfoguard:latest "$LOCAL_REGISTRY/jskala/nfoguard:latest"
         docker tag nfoguard:latest "$LOCAL_REGISTRY/jskala/nfoguard:${{ github.sha }}"
         
         echo "Pushing to LOCAL registry (gigabit speed!)..."
         
         # Push with reasonable timeout for local network
+        echo "=== Pushing cache image (for faster future builds) ==="
+        timeout 60 docker --config $DOCKER_CONFIG push "$LOCAL_REGISTRY/jskala/nfoguard:buildcache" && echo "✅ Cache image pushed" || echo "⚠️ Cache push failed"
+        
         echo "=== Pushing latest tag to LOCAL IP ==="
         if timeout 120 docker --config $DOCKER_CONFIG push "$LOCAL_REGISTRY/jskala/nfoguard:latest"; then
           echo "✅ Latest tag pushed successfully to LOCAL registry"