Docker

Add a backuparr service to the compose file that already defines your apps, so it shares their network and can reach them by name.

services:
  backuparr:
    image: rsaturns/backuparr:latest
    container_name: backuparr
    restart: unless-stopped
    environment:
      - TZ=America/Los_Angeles
      - PUID=1000
      - PGID=1000
      # Optional - see Environment variables.
      #- LOG_LEVEL=INFO
      #- BACKUPARR_FORCE_HTTPS=true
      #- BACKUPARR_DISABLE_AUTH=true
      #- BACKUPARR_SECRETS_KEY=
      #- RCLONE_CONFIG_PASS=
      # Changing this also means updating the ports: mapping below.
      #- WEBUI_PORT=8990
    ports:
      - "8990:8990"
    volumes:
      # config.json, rclone.conf, and local-destination backups.
      - /share/Container/backuparr:/config/backuparr
      # Optional: needed only to restore Bazarr - path to its config/backup folder.
      #- /share/Container/bazarr/backup:/mnt/bazarr-backup
      # Needed to back up Jellyfin - its backups folder (see the Jellyfin note).
      #- /share/Container/jellyfin/config/data/backups:/mnt/jellyfin-backups
      # Needed to back up Emby - its /config folder (see the Emby note).
      #- /share/Container/emby/config:/mnt/emby:ro
      # Needed to back up Plex - its "Plex Media Server" folder (see the Plex note).
      #- "/share/Container/plex/Library/Application Support/Plex Media Server:/mnt/plex:ro"
      # Needed to back up Seerr - its /app/config folder (see the Seerr note).
      #- /share/Container/seerr/config:/mnt/seerr:ro

docker compose up -d

Or without Compose:

docker run -d --name backuparr --restart unless-stopped \
  -e TZ=America/Los_Angeles -e PUID=1000 -e PGID=1000 \
  -p 8990:8990 \
  -v /share/Container/backuparr:/config/backuparr \
  rsaturns/backuparr:latest

Published for linux/amd64 and linux/arm64. latest is the newest tagged release; pin a version (e.g. rsaturns/backuparr:1.10.2) to control upgrades. Tags are on Docker Hub, and the same images are on GitHub Container Registry as ghcr.io/rsaturns/backuparr.

The optional settings are explained under Environment variables, and the extra volumes in the notes for Bazarr, Jellyfin, Emby, Plex and Seerr.

Then go through the first run.