feat: push cache separately when multi platform

workaround: docker/buildx#1044

.ansible-ci/inventory/group_vars/all/dockerfile_builder.yml

@@ -52,6 +52,7 @@ external_release_version_regex: ^([0-9]+)\.([0-9]+)\.([0-9]+)
 # build vars
 dockerfile_builder: docker
 dockerfile_builder_use_buildx: true
+dockerfile_builder_buildx_multiplatform_cache: false
 dockerfile_builder_platforms:
   - 'linux/amd64'
   - 'linux/arm64'

.ansible-ci/tasks/builder/cache.yml

@@ -22,8 +22,7 @@
           set_fact:
             dockerfile_builder_cache_from:
               "{{ dockerfile_builder_cache_from | default([]) +
-              [cache_image +
-              ':' + item] }}"
+              [cache_image + ':' + item] }}"
 
         - name: set cache build args variables
           when:
@@ -72,4 +71,5 @@
         cache_separate_image_name_tag: "{{ cache_image }}:build-cache"
       set_fact:
         dockerfile_builder_cache_from: "{{ [cache_separate_image_name_tag] }}"
-        dockerfile_builder_cache_to: "{{ [cache_separate_image_name_tag] }}"
+        dockerfile_builder_cache_to: "{{ ['type=' + dockerfile_builder_cache_to_type | default('registry') +
+         ',mode=' + dockerfile_builder_cache_to_mode | default('max') + ',ref=' + cache_separate_image_name_tag] }}"

.ansible-ci/vars/main.yml

@@ -1,7 +1,7 @@
 repo_owner: "{{ lookup('env','REPO_OWNER') | default('krestomatio',true) }}"
 repo_name: "{{ lookup('env','REPO_NAME') | default('container_builder',true) }}"
 project_registry_path: "{{ repo_owner+'/'+repo_name }}"
-build_cache: true
+build_cache: "{{ not dockerfile_builder_buildx_multiplatform_cache | default(false) }}"
 build_cache_prepull: "{{ false if dockerfile_builder_use_buildx else true }}"
 build_cache_first_prepull: true
 build_push: "{{ lookup('env','BUILD_PUSH') | default(true,true) }}"