sys-ctl-rpr-docker-soft: switch to STRICT label mode and adapt tests

- script.py now resolves docker-compose project and working_dir strictly from container labels
- removed container-name fallback logic
- adjusted sys-ctl-hlth-docker-container to include sys-ctl-rpr-docker-soft
- cleaned up sys-svc-docker dependencies
- updated unit tests to mock docker inspect and os.path.isfile for STRICT mode

Conversation: https://chatgpt.com/share/68b80927-b800-800f-a909-0fe8d110fd0e

roles/sys-ctl-hlth-docker-container/tasks/01_core.yml

@@ -3,6 +3,11 @@
     name: sys-ctl-alm-compose
   when: run_once_sys_ctl_alm_compose is not defined
   
+- name: Include dependency 'sys-ctl-rpr-docker-soft'
+  include_role:
+    name: sys-ctl-rpr-docker-soft
+  when: run_once_sys_ctl_rpr_docker_soft is not defined
+
 - include_role:
     name: sys-service
   vars: