Customize app config

Overview

In this guide, we'll show you how to customize the configuration of an app by overriding the default docker-compose.yml and app.env files.

Example use cases

Set Pihole to listen on a custom IP address
Mount an existing volume on your host into a media app such as Jellyfin. By default, media apps will only be able to see files within runtipi/media, but you can add other volumes.

An alternative approach to mounting a volume into an app would be to symlink your host volume into runtipi/media. However, that would make it visible to all apps that mount the media folder, which may not be desirable.

Create custom docker config

In this example we're going to add environment variables to the Pihole app and mount the /cellar volume into the Jellyfin app.

To determine how to set environment variables to customize the Pihole container, we look at runtipi/apps/pihole/docker-compose.yml:

ports:
  - ${NETWORK_INTERFACE:-0.0.0.0}:53:53/tcp
  - ${NETWORK_INTERFACE:-0.0.0.0}:53:53/udp
  - ${NETWORK_INTERFACE:-0.0.0.0}:${APP_PORT}:80

From this, we know that we need to set the NETWORK_INTERFACE variable.

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Don't edit the files in the apps folder directly; they will be overwritten on update.

Create user-config folder within runtipi and a folder for each app:

cd runtipi
mkdir user-config
mkdir user-config/jellyfin
mkdir user-config/pihole

Create a docker-compose.yml for jellyfin and add this content:

touch user-config/jellyfin/docker-compose.yml
nano user-config/jellyfin/docker-compose.yml

version: "3.7"
services:
  jellyfin:
    volumes:
      - /cellar:/cellar

💡

Replace /cellar with the volume you want to mount.

Create an app.env for pihole and add this content:

touch user-config/pihole/app.env
nano user-config/pihole/app.env

NETWORK_INTERFACE=10.20.0.53

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Replace 10.20.0.53 with the IP address you want pihole to listen on.

You should end up with a structure like this:

- - docker-compose.yml
- - app.env

Restart the apps and test:

./runtipi-cli app stop jellyfin
./runtipi-cli app stop pihole
./runtipi-cli app start jellyfin
./runtipi-cli app start pihole

Test Jellyfin by opening the app and configuring a library. You should now see your mounted volume.
Test Pihole with a DNS query to the new IP address:

nslookup google.com 10.20.0.53

Server:         10.20.0.53
Address:        10.20.0.53#53

Non-authoritative answer:
Name:   google.com
Address: 142.250.200.46
Name:   google.com
Address: 2a00:1450:4009:822::200e

Custom Environment Variables Customize tipi compose and traefik config