[DockerApi] Rename DockerApi to Controller and add mailcow-adm tool

data/Dockerfiles/controller/supervisord.conf

@@ -0,0 +1,17 @@
+[supervisord]
+nodaemon=true
+user=root
+pidfile=/var/run/supervisord.pid
+
+[program:api]
+command=python /app/api/main.py
+autostart=true
+autorestart=true
+stdout_logfile=/dev/stdout
+stderr_logfile=/dev/stderr
+stdout_logfile_maxbytes=0
+stderr_logfile_maxbytes=0
+
+[eventlistener:processes]
+command=/usr/local/sbin/stop-supervisor.sh
+events=PROCESS_STATE_STOPPED, PROCESS_STATE_EXITED, PROCESS_STATE_FATAL