healthcheck bug fix and add podman compatibility

[mtcolman]

fix FATAL error messages:

2024-11-12 17:08:53.814 UTC [38] LOG:  database system was shut down at 2024-11-12 17:08:53 UTC
2024-11-12 17:08:53.818 UTC [1] LOG:  database system is ready to accept connections
2024-11-12 17:09:06.897 UTC [43] FATAL:  role "postgres" does not exist
2024-11-12 17:09:17.904 UTC [45] FATAL:  role "postgres" does not exist
2024-11-12 17:09:28.931 UTC [48] FATAL:  role "postgres" does not exist

postgres user isn't created because POSTGRES_USER=${POSTGRESQL_AUTH_USERNAME} and POSTGRESQL_AUTH_USERNAME=cbomkit. Therefore need to set user as cbomkit (-U cbomkit) and database as postgres (-d postgres) and then the errors don't occur.

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Also, updated the makefile to allow use of podman-compose via a parameter.

[n1ckl0sk0rtge]

@mtcolman thanks for the changes! LGTM