Configured Docker builds to use cache from previous images

.gitlab-ci.yml

@@ -94,8 +94,10 @@ lint_python_scripts:
         export tag="$CI_COMMIT_REF_SLUG" 
       fi
       echo -e "\e[0Ksection_end:$(date +%s):tag\r\e[0K"
-      echo -e "\e[0Ksection_start:$(date +%s):build[collapsed=true]\r\e[0KBaking image "$CI_REGISTRY_IMAGE/$BUILD_TARGET${tag}"..."
-      docker buildx bake --progress=plain --push "$BUILD_TARGET"
+      echo -e "\e[0Ksection_start:$(date +%s):build[collapsed=true]\r\e[0KBaking image "$CI_REGISTRY_IMAGE/$BUILD_TARGET:${tag}"..."
+      docker context create builder-context
+      docker buildx create --driver docker-container --name docker-container-builder builder-context
+      docker buildx bake --progress=plain --builder docker-container-builder --push "$BUILD_TARGET"
       echo -e "\e[0Ksection_end:$(date +%s):build\r\e[0K"
   needs:
     - build_docker_dind_image

docker-bake.hcl

@@ -17,27 +17,51 @@ function "generate-tags" {
   ]
 }
 
+function "generate-cache-from" {
+  params = [target]
+  result = [
+    notempty(CI_REGISTRY_IMAGE) ? "type=registry,ref=${CI_REGISTRY_IMAGE}/${target}:${tag}-cache" : "${target}:${tag}",
+  ]
+}
+
+function "generate-cache-to" {
+  params = [target]
+  result = [
+    notempty(CI_REGISTRY_IMAGE) ? "type=registry,mode=max,ref=${CI_REGISTRY_IMAGE}/${target}:${tag}-cache" : "type=inline",
+  ]
+}
+
 target "benchmark-test-runner" {
   dockerfile = "Dockerfile.benchmark-test-runner"
   tags = generate-tags("benchmark-test-runner")
+  cache-from = generate-cache-from("benchmark-test-runner")
+  cache-to = generate-cache-to("benchmark-test-runner")
 }
 
 target "docker-builder" {
   dockerfile = "Dockerfile.docker-builder"
   tags = generate-tags("docker-builder")
+  cache-from = generate-cache-from("docker-builder")
+  cache-to = generate-cache-to("docker-builder")
 }
 
 target "docker-dind" {
   dockerfile = "Dockerfile.docker-dind"
   tags = generate-tags("docker-dind")
+  cache-from = generate-cache-from("docker-dind")
+  cache-to = generate-cache-to("docker-dind")
 }
 
 target "image-remover" {
   dockerfile = "Dockerfile.image-remover"
   tags = generate-tags("image-remover")
+  cache-from = generate-cache-from("image-remover")
+  cache-to = generate-cache-to("image-remover")
 }
 
 target "tox-test-runner" {
   dockerfile = "Dockerfile.tox-test-runner"
   tags = generate-tags("tox-test-runner")
+  cache-from = generate-cache-from("tox-test-runner")
+  cache-to = generate-cache-to("tox-test-runner")
 }
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