add caching for the docker image

Author: Frosty2500

.github/workflows/ci.yml

@@ -359,9 +359,17 @@ jobs:
            mkdir -p input
            curl -L -o input/TestDataWithThumbnail.aasx \
            https://media.githubusercontent.com/media/admin-shell-io/aas-test-engines/main/bin/check_servers/test_data/TestDataWithThumbnail.aasx
-      - name: Build the Docker image
-        run: |
-          docker build -t basyx-python-server -f Dockerfile ..
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Build Docker image with cache
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./server/Dockerfile
+          push: false
+          tags: basyx-python-server
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
       - name: Run container
         run: |
           docker run -d -p 8081:80 -v ./input:/input -v ./storage:/storage --name basyx-python-server basyx-python-server