Refactor docker-compose templates: replace {% include 'build.yml.j2' %} with lookup() + indent for proper YAML embedding. Also adjusted build.yml.j2 to remove leading spaces. See: https://chatgpt.com/share/68ce584a-a430-800f-8e2a-0f96884cc8d1

roles/docker-container/templates/build.yml.j2

@@ -1,6 +1,6 @@
 {# integrate it into service sections to be build by Dockerfile #}
-    pull_policy: never
-    build:
-      context: .
-      dockerfile: Dockerfile
+pull_policy: never
+build:
+  context: .
+  dockerfile: Dockerfile
 {# pass Arguments here #}