Apply custom config to postgres docker image

Signed-off-by: Keshav Priyadarshi <git@keshav.space>

Author: keshav-space

docker-compose.yml

@@ -3,9 +3,11 @@ version: '3'
 services:
   db:
     image: postgres:13
+    command: -c config_file=/etc/postgresql/postgresql.conf
     env_file:
       - docker.env
     volumes:
+      - ./etc/postgresql/postgresql.conf:/etc/postgresql/postgresql.conf
       - db_data:/var/lib/postgresql/data/
 
   web: