@jyip_5228 FYI, as part of ProGet 5.3.10 release, we shipped the ProGetCore container image as well.
You can follow the normal steps in the Linux and Docker Installation Guide to install/upgrade, but just use progetcore for the container instead of proget.
Aside from support for the Lucene-based Maven feed indexing (in progress), it seems to be feature complete. And of course, if there are problems, you can switch back to proget:5.3.10 or downgrade as needed (no database schema changes).
For example, docker pull proget.inedo.com/productimages/inedo/progetcore:5.3.10