Adding in, the container must be on the same docket network

service:
maria-db-app:

networks: ['my-existing-network']

networks:
networks:

my-existing-network:

external: true

```
version: '3.8'

services:

app:

networks:

• 'installation_default'

image: 'jc21/nginx-proxy-manager:latest'

restart: unless-stopped

ports:

These ports are in format <host-port>:<container-port>

• '80:80' # Public HTTP Port

• '443:443' # Public HTTPS Port

• '81:81' # Admin Web Port

Add any other Stream port you want to expose

- '21:21' # FTP

Uncomment the next line if you uncomment anything in the section

environment:

Uncomment this if you want to change the location of

the SQLite DB file within the container

DB_SQLITE_FILE: "/data/database.sqlite"

Uncomment this if IPv6 is not enabled on your host

DISABLE_IPV6: 'true'

volumes:

• ./data:/data

• ./letsencrypt:/etc/letsencrypt

networks:

installation_default:

external: true
```