Revert "fix: drop db_password from main compose def"

This reverts commit 89400089ec.

db_password secret is still needed in app service to set the db
secret in app.ini.tmpl

compose.yml

@@ -11,6 +11,7 @@ services:
         target: /usr/local/bin/docker-setup.sh
         mode: 0555
     secrets:
+      - db_password
       - internal_token
       - jwt_secret
       - secret_key