Fix cache

Signed-off-by: Federico Busetti <729029+febus982@users.noreply.github.com>

Author: febus982

.gitlab_ci/_templates.yml

@@ -17,13 +17,14 @@ variables:
     DOCKER_BUILDKIT: 1
     DOCKER_PLATFORM: ""
     DOCKER_TARGET: ""
+    DOCKER_CACHE_FULL_TAG: $CI_REGISTRY_IMAGE/$DOCKER_IMAGE_NAME:cache
   before_script:
     - apk add --no-cache bash git
   script:
     - docker buildx create --use
     - docker buildx inspect --bootstrap
     - *docker-gitlab-login
-    - echo "Building $DOCKER_IMAGE_FULL_TAG - Cache from $DOCKER_IMAGE_NAME:cache"
+    - echo "Building $DOCKER_IMAGE_FULL_TAG - Cache from $DOCKER_CACHE_FULL_TAG"
     - if [[ -n "$DOCKER_TARGET" ]]; then export TARGET_ARG="--target $DOCKER_TARGET"; fi;
     - if [[ -n "$DOCKER_PLATFORM" ]]; then export PLATFORM_ARG="--platform $DOCKER_PLATFORM"; fi;
     - if [[ -n "$DOCKER_PLATFORM" ]]; then export PLATFORM_SUFFIX="-$(echo $DOCKER_PLATFORM | sed 's/\///')"; fi;
@@ -34,8 +35,8 @@ variables:
       $TARGET_ARG \
       --tag $DOCKER_IMAGE_FULL_TAG$PLATFORM_SUFFIX \
       $PLATFORM_ARG \
-      --cache-from type=registry,ref=$DOCKER_IMAGE_NAME:cache \
-      --cache-to type=registry,ref=$DOCKER_IMAGE_NAME:cache \
+      --cache-from type=registry,ref=$DOCKER_CACHE_FULL_TAG \
+      --cache-to type=registry,ref=$DOCKER_CACHE_FULL_TAG \
       .
 
 # Architectures are hardcoded for multiarch, need to make this better