Even though PostgreSQL is possible to initialize and run in a podman-bootc environment using a containerfile, there is an issue in the testing farm.

Backport of this commit will fix it:

https://src.fedoraproject.org/rpms/postgresql16/c/792d3562895c039b47707ee526427ebe6ca41a55?branch=rawhide

__postgresqlRun: Initialising the database :: actually running 'postgresql-setup --initdb --unit postgresql'
runuser: user postgres does not exist or the user entry does not contain all the required fields
:: [ 04:14:33 ] :: [   FAIL   ] :: __postgresqlRun: Initialising the database (Expected 0, got 1)