Goeserver Adding Store : Unable to obtain connection: Cannot create PoolableConnectionFactory (Connection to localhost:5432 refused

Question

I have a Postgres server with Postgis extension enabled running on docker with port 5432 exposed. Im able to connect using psql -h localhost -p 5432 -U postgres -d db

but when I try to use the same credentials to add a store using geoserver I get the following error:

Error creating data store, check the parameters. Error message: Unable to obtain connection: Cannot create PoolableConnectionFactory (Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.)

this is my pg_hba.conf file as found on /var/lib/postgresql/data

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     trust
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
# IPv6 local connections:
host    all             all             ::1/128                 trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                     trust
host    replication     all             127.0.0.1/32            trust
host    replication     all             ::1/128                 trust

host all all all scram-sha-256

Im using geoserver 2.25

1. Tried connecting to postgis instance

psql -h localhost -p 5432 -U postgres -d db - works

2.