Make gvmd listen to pg-gvm port 5433

Hi team,
this is a Linux system, runnning dockerd.
Port 5432 is already used by the “default” host postgresqld. I need to make gvmd listen to port 5433 (which is unoccupied), but how to tell it to use this port? I cannot find any documentation on that.

For clarification, in the logs I receive:

2023-04-13 15:49:59.637 UTC [82] LOG:  starting PostgreSQL 13.8 (Debian 13.8-0+deb11u1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 10.2.1-6) 10.2.1 20210110, 64-bit
2023-04-13 15:49:59.644 UTC [82] LOG:  listening on IPv4 address "127.0.0.1", port 5432
2023-04-13 15:49:59.644 UTC [82] LOG:  could not bind IPv6 address "::1": Cannot assign requested address
2023-04-13 15:49:59.644 UTC [82] HINT:  Is another postmaster already running on port 5432? If not, wait a few seconds and retry.
2023-04-13 15:49:59.667 UTC [82] LOG:  listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
2023-04-13 15:49:59.700 UTC [83] LOG:  database system was shut down at 2023-04-13 15:49:56 UTC

Martin.