fixup! fixup! WIP: add debian package builder

improve docker build cache

Author: endersonmaia

.github/workflows/debian.yml

@@ -32,9 +32,14 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@ce360397dd3f832beb865e1373c09c0e9f86d70a # v4.0.0
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
+
       - name: Make builder container image
         working-directory: debian
-        run: make image TARGET_ARCH=${{ matrix.target-arch }}
+        run: |
+          make image TARGET_ARCH=${{ matrix.target-arch }} \
+            DOCKER_BUILD_FLAGS="--cache-from type=gha,scope=${{ matrix.target-arch }} --cache-to type=gha,scope=${{ matrix.target-arch }},mode=max"
 
       - name: Build packages
         working-directory: debian

debian/Makefile

@@ -95,12 +95,16 @@ exec: ## Execute a COMMAND inside an image for given TARGET_ARCH
 		apt-get update -o Dir::Etc::sourcelist=/etc/apt/sources.list.d/cartesi-deb-apt.list -o Dir::Etc::sourceparts=- -o APT::Get::List-Cleanup=0 || true) && \
 	$(COMMAND)"
 
+DOCKER_BUILD_FLAGS=
+
 image: ## Build Docker image for building packages for given TARGET_ARCH
-	docker build --platform=linux/$(TARGET_ARCH) \
+	docker buildx build --platform=linux/$(TARGET_ARCH) \
 		--build-arg=BASE_IMAGE=$(BASE_IMAGE) \
 		--tag=$(IMAGE) \
+		--load \
 		--progress=plain \
-		--file Dockerfile .
+		--file Dockerfile \
+		$(DOCKER_BUILD_FLAGS) .
 
 test: ## Test built packages for all architectures (amd64/arm64/riscv64)
 	@$(MAKE) --no-print-directory test-packages TARGET_ARCH=amd64