Using compose, afterdocker-compose up.
I ask it to quit,ctrl+C when started without detaching,
or elsedocker-compose down.
I noticed, that my flask-docker instance always time outs after the 10 seconds.

I believe that could be some issue with thepid-1-zombie-process thing.

Some references:

• https://blog.phusion.nl/2015/01/20/docker-and-the-pid-1-zombie-reaping-problem/
• https://engineeringblog.yelp.com/2016/01/dumb-init-an-init-for-docker.html
  • Github:https://github.com/Yelp/dumb-init
• https://blog.tutum.co/2014/12/02/docker-and-s6-my-new-favorite-process-supervisor/
  • Example:https://blog.tutum.co/2015/05/20/s6-made-easy-with-the-s6-overlay/

Can that issue apply here?