PgBackRest custom compiled postgres server

Hello

I want to backup from custom compiled postgres database. But I am
getting an error as below. This database does not work with the
default "postgres" user. That's why I added the "pg1-host-user"
parameter. However, I am still getting the error as below. A
specially compiled postgres server always asks for a password when
connecting. (for example when connecting: pgsql -U custom_username
postgres)

Is there a variable like "pg1-host-pass"?

error:
pgbackrest --stanza=customdb1 stanza-create

WARN: unable to check pg-1: [DbConnectError] unable to connect to
'dbname='postgres' port=5432': fe_sendauth: no password supplied
ERROR: [056]: unable to find primary cluster - cannot proceed

Thanks.

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