Support for deprecated PHP versions should be terminated shortly after the branch reaches its end of life.
Proposition:
Set deprecation date to 3 months from date it was announced but not earlier than branches' end of life.
Add deprecation notice to versions table in README (and drupal-docker/docs)
Support (feature & security) version until its deprecation date
Do not remove deprecated version from Docker Registry - if project is build on top of deprecated version it will stop getting feature or security updates
Support for deprecated PHP versions should be terminated shortly after the branch reaches its end of life.
Proposition: