best way to relaunch background task after a new docker-compose build and launch of container

[fcoppey]

I tried to install supervisord but could never make it work.
always exiting right after launch:
2020-07-06 15:57:56,453 INFO supervisord started with pid 27437
2020-07-06 15:57:57,457 INFO spawned: 'tasks' with pid 27438
2020-07-06 15:57:58,325 INFO success: tasks entered RUNNING state, process has stayed up for > than 0 seconds (startsecs)
2020-07-06 15:57:58,405 INFO exited: tasks (exit status 1; not expected)

here is my config:
[program:tasks]
directory=/home/apptitude/my_docker_folder/
command=sudo /usr/local/bin/docker-compose exec web python manage.py process_tasks
startsecs=0
autorestart=false
user=root

Any help welcome... so annoying to relaunch manually after each new docker-compose relaunch of my django server.

thanks