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Traefik

If you have chosen to use traefik as proxy-server you need to do a few things:

Change TCP/IP Ports

To install behind a proxy server, look for this section in the app.yml and change the external ports

## which TCP/IP ports should this container expose?
## If you want Discourse to share a port with another webserver like Apache or nginx,
## see https://meta.discourse.org/t/17247 for details
expose:
  - "80:80"   # http
  - "443:443" # https

and change it to something alike:

expose:
  - "7890:80"   # http
  - "7891:443" # https
docker_args:
  - "--network=web"
  - "--expose=80"
  - "-l traefik.backend=forum"
  - "-l traefik.frontend.rule=Host:discourse.example.com"
  - "-l traefik.docker.network=web"
  - "-l traefik.port=80"

Build and launch

After every change to the app.yml you need to rebuild your discourse application:

./launcher rebuild app
./launcher start app

Success

Your discourse instance is now available at discourse.example.com. If you have setup your .toml correctly your discourse instance will be available via https://