add option to trust all hosts #4033

while setting this option isn't recommended by postgres, it is the
expected situation during setup of paperless-ngx.
As long as the docker network isn't 'host' and the postgres port
isn't mapped to a host port, the risk is very low.

s. comment in #4033 by stumpylog

docker/compose/docker-compose.postgres.yml

@@ -43,6 +43,7 @@ services:
       POSTGRES_DB: paperless
       POSTGRES_USER: paperless
       POSTGRES_PASSWORD: paperless
+      POSTGRES_HOST_AUTH_METHOD: trust
 
   webserver:
     image: ghcr.io/paperless-ngx/paperless-ngx:latest