Use supervisord to supervise Postgres and Caddy in the Complement image. (#12480)

Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>

docker/conf/log.config

@@ -2,11 +2,7 @@ version: 1
 
 formatters:
   precise:
-{% if worker_name %}
-    format: '%(asctime)s - worker:{{ worker_name }} - %(name)s - %(lineno)d - %(levelname)s - %(request)s - %(message)s'
-{% else %}
     format: '%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(request)s - %(message)s'
-{% endif %}
 
 handlers:
 {% if LOG_FILE_PATH %}