We've introduced a rocky8 flavor of Dockerfile to provide migrid in Rocky8 containers.
With Rocky8 moving from Python2 to Python3 and some of the dependencies we rely on gone it requires some work and testing to stabilize the set up.

With CentOS7 going EoL on June 30th 2024 we need to move to Rocky so at least this 8.x series.

Standard data migrid sites run well on Python2 and have been tested more with Python3. So they should mostly be no problem running on Rocky8.
Sensitive data migrid sites run well on Python2 and only gained Python3 support more recently. So they may need more care and testing on the Rocky8 platform.