Use registry cache and push image to registry

Signed-off-by: Federico Busetti <[email protected]>

Author: febus982

.gitlab_ci/_templates.yml

@@ -5,25 +5,25 @@
     - docker:24.0.2-dind
   variables:
     DOCKER_BUILDKIT: 1
-    DOCKER_IMAGE_NAME: $CI_PROJECT_NAME
+    DOCKER_IMAGE_NAME: $CI_REGISTRY_IMAGE
     DOCKER_IMAGE_TAG: $CI_COMMIT_SHA
     DOCKER_IMAGE_TAG_SUFFIX: ""
-    DOCKER_PLATFORM: "linux/arm64,linux/amd64"
+    DOCKER_PLATFORM: "linux /arm64,linux/amd64"
     DOCKER_TARGET: dev
   before_script:
     - apk add --no-cache qemu bash git
   script:
     - docker buildx create --use
     - docker buildx inspect --bootstrap
+    - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN registry.gitlab.com
     - |
+      echo "###### Building $DOCKER_IMAGE_NAME:$DOCKER_IMAGE_TAG$DOCKER_IMAGE_TAG_SUFFIX - Cache from $DOCKER_IMAGE_NAME:cache ########" 
       docker buildx build \
       --target=$DOCKER_TARGET \
       --tag=$DOCKER_IMAGE_NAME:$DOCKER_IMAGE_TAG$DOCKER_IMAGE_TAG_SUFFIX \
       --platform=$DOCKER_PLATFORM \
-      --cache-to=type=local,dest=/tmp/.buildx-cache \
-      --cache-from=type=local,src=/tmp/.buildx-cache \
+      --cache-from type=registry,ref=$DOCKER_IMAGE_NAME:cache \
+      --cache-to type=registry,ref=$DOCKER_IMAGE_NAME:cache \
+      --push \
       .
-  artifacts:
-    paths:
-      - /tmp/.buildx-cache
-    expire_in: 1h
+    # TODO: Sign image using Cosign