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Enable tini by default

Stan Hu requested to merge sh-enable-tini-by-default into master

What does this MR do?

Previously tini could be activated by setting USE_TINI=1. We've rolled this out fully on GitLab.com on both the production and staging fleet (gitlab-com/gl-infra/production#18186 (closed)), and we've seen zombie processes disappear completely as a result:

image

Make tini the default now that this appears to be working well.

Related issues

Checklist

See Definition of done.

For anything in this list which will not be completed, please provide a reason in the MR discussion

Required

  • Merge Request Title, and Description are up to date, accurate, and descriptive
  • MR targeting the appropriate branch
  • MR has a green pipeline on GitLab.com
  • When ready for review, MR is labeled "~workflow::ready for review" per the Distribution MR workflow

Expected (please provide an explanation if not completing)

  • Test plan indicating conditions for success has been posted and passes
  • Documentation created/updated
  • Integration tests added to GitLab QA
  • The impact any change in container size has should be evaluated
  • New dependencies are managed with dependencies.io
Edited by Jason Plum

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