Issue
Is there a best practice to match an official Ubuntu minor release update (like LTS 18.04.6) to a tag in the docker repository that is in the form "ubuntu:bionic-20210930"?
Solution
The best practice is to target LTS release version current build:
- 18.04 or bionic
- 20.04 or focal
- latest
There is no intermediate LTS releases tags, and I don't know why you could need this, but you can target to date based build as 'bionic-20210930' despite there is no correlation table for dates and minor release.
Answered By - Claudio Weiler