Here is my compose file:

version: '3.3'

services:
  app:
    image: matrixdotorg/synapse
    restart: unless-stopped
    ports:
      - 8008:8008
    volumes:
      - ./data:/data
    hostname: matrix

  mautrix-telegram:
    container_name: mautrix-telegram
    image: dock.mau.dev/mautrix/telegram
    restart: unless-stopped
    volumes:
      - ./mautrix-telegram-data:/data
    hostname: mautrix

  mautrix-whatsapp:
    container_name: mautrix-whatsapp
    image: dock.mau.dev/mautrix/whatsapp
    restart: unless-stopped
    volumes:
      - ./mautrix-whatsapp-data:/data
    hostname: mautrix-whatsapp

I have nginx running as a reverse proxy on the host. I haven't gotten the federation to work yet but I think it's an ipv6 issue.

Setting up the bridges was quiet easy using these instructions

Let me know if you have anymore questions. It's running on a small host with 40 docker containers running in parallel and the cpu sits idle at 5% so it's not much of a drain.

I too would be interested in this compose file, if it's not too much trouble!

Edit: a word