TOR-quick

tor-quick is a docker container for setting up an onion service and forwarding traffic to specified addresses.

---

A minimal compose stack could look like this:

services:
  tor-quick:
    image: ghcr.io/felix-zenk/tor-quick:latest
    environment:
      FORWARD_ADDR: 80:172.17.0.1:8000

This will create an onion service that forwards traffic on the listening port 80 to 172.17.0.1:8000.
Have a look at docker-compose.yaml for a more complete example.

Possible formats for FORWARD_ADDR are:

Format	Listening address	Destination address
PORT:FWD_HOST	*.onion:PORT	FWD_HOST:PORT
PORT:FWD_HOST:FWD_PORT	*.onion:PORT	FWD_HOST:FWD_PORT
FWD_HOST:FWD_PORT	*.onion:80	FWD_HOST:FWD_PORT

Additional environment variables can be set to configure the onion service further:

• CHECK_DESTINATION: If set to true, the destination addresses will be checked for reachability before starting the onion service. Helps to avoid misconfigurations.
• ENABLE_VANGUARDS: If set to true, the Vanguards addon will be enabled.
• TORRC_EXTRA: Additional configuration to append to the torrc file.

You can also combine tor-quick with a server, that should be accessible as an onion service, in the compose stack and reference it by its service name:

services:
  webserver:
    image: crccheck/hello-world
    container_name: hello-world-webserver
    ports:
      - 8000:8000
  tor-quick:
    image: ghcr.io/felix-zenk/tor-quick:latest
    container_name: tor-quick
    environment:
      FORWARD_ADDR: 80:webserver:8000

To use a specific onion address instead of generating a random one, you can supply the onion service directory (containing the hostname and key) as a volume:

services:
  webserver:
    image: crccheck/hello-world
    container_name: hello-world-webserver
  tor-quick:
    image: ghcr.io/felix-zenk/tor-quick:latest
    container_name: tor-quick
    environment:
      FORWARD_ADDR: 80:webserver:8000
    volumes:
      - ./hidden_service:/var/lib/tor/hidden_service
      ## Or use a named volume to let tor generate a random address on first start and persist it.
      # - hidden-service:/var/lib/tor/hidden_service
# volumes:
  # hidden-service:

The .onion address of your onion service will be printed to the logs:

$ docker logs tor-quick | grep "Onion Service address:"

Multiple forwards can be set up by specifying numbered FORWARD_ADDR environment variables:

services:
  http-reverse-proxy:
    ...
  ssh-server:
    ...
  irc-server:
    ...

  tor-quick:
    image: ghcr.io/felix-zenk/tor-quick:latest
    container_name: tor-quick
    environment:
      FORWARD_ADDR1: 80:http-reverse-proxy
      FORWARD_ADDR2: 443:http-reverse-proxy
      FORWARD_ADDR3: 22:ssh-server
      FORWARD_ADDR4: 6667:irc-server
  volumes:
    - hidden-service:/var/lib/tor/hidden_service
  restart: unless-stopped

volumes:
  hidden-service:

Keep in mind, that not every listening port can be used and relay operators may constrain the usable ports further.

To view just the active forwards:

$ docker logs tor-quick | grep "Hidden service:"

or get a combined output:

$ docker logs tor-quick | grep ".onion"