The default odoo docker uses the following parameters in the wait-for-psql.py script that is called from the entrypoint.sh

    arg_parser = argparse.ArgumentParser()
    arg_parser.add_argument('--db_host', required=True)
    arg_parser.add_argument('--db_port', required=True)
    arg_parser.add_argument('--db_user', required=True)
    arg_parser.add_argument('--db_password', required=True)
    arg_parser.add_argument('--timeout', type=int, default=5)

But we don't want to use these parameters, only odoo will use them to test the connection.

So, in our docker-compose file, we are going to configure the connection parameters to our RDS

version: '3.3'
services:
    odoo:
        container_name: odoo15
        image: odoo/odoo:15.0
        # build:
        restart: always
        tty: true
        networks:
            - default
        ports:
            - "0.0.0.0:8069:8069"
        volumes:
            - odoo-data:/var/lib/odoo:delegated
            - ~/odoo15e/enterprise:/mnt/enterprise:delegated
            - ~/odoo15e/design-themes:/mnt/design-themes:delegated
            - ./conf:/etc/odoo
        environment:
            - DB_PORT_5432_TCP_ADDR=odoo-prod-db-odoo-ar.us-east-1.rds.amazonaws.com
            - DB_PORT_5432_TCP_PORT=5432
            - DB_ENV_POSTGRES_USER=odoo
            - DB_ENV_POSTGRES_PASSWORD=dfioluhe546kljhgdrf87
networks:
     default:
         driver: bridge
volumes:
    odoo-data:

In the RDS console, we need to give the privileges to the odoo user who is going to connect to the database.

ALTER ROLE odoo WITH CREATEDB;

While our odoo.conf file does not have to contain connection parameters for the script wait-for-psql.py to allow us to run the container without giving errors

[options]
addons_path = /mnt/odoo/addons,/mnt/enterprise,/mnt/design-themes
admin_passwd = j5HyMkxA$GgN4VVaPhuOCkJRHh2F9EaoLWyx78LzrH6q
csv_internal_sep = ,
data_dir = /var/lib/odoo
;db_host = False
db_maxconn = 64
;db_name = False
;db_password = False
;db_port = 5432
;db_sslmode = prefer
;db_template = template0
;db_user = False
;dbfilter = False
demo = {}
email_from = False
from_filter = False
geoip_database = /usr/share/GeoIP/GeoLite2-City.mmdb
http_enable = True
http_interface =
http_port = 8069
import_partial =

;)