services:
  sable:
    image: git.sable.moe/sableclient/sable-next:latest
    ports:
      - '127.0.0.1:8080:8080'
    volumes:
      - ./config.json:/app/config.json:ro
    restart: unless-stopped

Looks pretty simple to selfhost the web client too

https://github.com/SableClient/sable-next/blob/main/Caddyfile

Edit~~: I couldn’t get it working, moved to selfhosting cinny~~

Edit2: I got it working 🤘

Use this config file as a base https://git.sable.moe/SableClient/sable-next/raw/branch/main/static/config.json