Optimized for 2.20

roles/docker-compose/tasks/04_files.yml

@@ -1,17 +1,27 @@
+- name: "Find optional Dockerfile for {{ application_id }}"
+  set_fact:
+    dockerfile_src: >-
+      {{ lookup(
+           'first_found',
+           {
+             'files': [
+               application_id | abs_role_path_by_application_id ~ '/templates/Dockerfile.j2',
+               application_id | abs_role_path_by_application_id ~ '/files/Dockerfile'
+             ]
+           },
+           errors='ignore'
+         ) | default('', true)
+      }}
+
 - name: "Create (optional) Dockerfile for {{ application_id }}"
   template:
-    src: "{{ item }}"
+    src: "{{ dockerfile_src }}"
     dest: "{{ docker_compose.files.dockerfile }}"
-  loop:
-    - "{{ application_id | abs_role_path_by_application_id }}/templates/Dockerfile.j2"
-    - "{{ application_id | abs_role_path_by_application_id }}/files/Dockerfile"
-  notify: 
+  notify:
     - docker compose build
     - docker compose up
-  register: create_dockerfile_result
-  failed_when:
-    - create_dockerfile_result is failed
-    - "'Could not find or access' not in create_dockerfile_result.msg"
+  when:
+    - dockerfile_src | default('') | length > 0
 
 - name: "Create (optional) '{{ docker_compose.files.env }}'"
   template: