Details:
- NEXTCLOUD_DOCKER_CONF_DIRECTORY, NEXTCLOUD_DOCKER_CONFIG_FILE, NEXTCLOUD_DOCKER_CONF_ADD_PATH
now built with path_join instead of string concat
- NEXTCLOUD_DOCKER_EXEC_OCC now uses path_join for occ command
- makes path handling more robust and consistent
See: https://chatgpt.com/share/68d14d85-3d80-800f-9d1d-fcf6bb8ce449