Python script produces zombie processes only in Docker

Question

I have quite complicated setup with

• Luigi https://github.com/spotify/luigi
• https://github.com/kennethreitz/requests-html
• and https://github.com/miyakogi/pyppeteer

But long story short - everything works fine at my local Ubuntu (17.10) desktop, but when run in Docker(18.03.0-ce) via docker-compose(1.18.0) (config version 3.3, some related details here https://github.com/miyakogi/pyppeteer/issues/14) it bloats up with zombie chrome processes spawned from python.

Any ideas why it might happen and what to do with it?

Answer 1

Try installing dumb-init: https://github.com/Yelp/dumb-init (available both in alpine and debian) inside your container and use it as entry point (more reading here: https://blog.phusion.nl/2015/01/20/docker-and-the-pid-1-zombie-reaping-problem/)