Docker image for TURN server

A Docker container with the Coturn TURN server.

• hub.docker.com (Docker image): boldt/coturn
• github.com (Repo): boldt/turn-server-docker-image

Run the container

docker run \
  -d \
  -p 3478:3478 \
  -p 3478:3478/udp \
  -p 65435-65535:65435-65535/udp \
  --restart=always \
  --name coturn \
  boldt/coturn

Environment variables

This image supports some environment variables:

• USERNAME: Username needed for turn. Defaults to username
• PASSWORD: Password needed for turn. Defaults ro password
• REALM: Realm needed for turn. Defaults to realm
• MIN_PORT: This defines the min-port for the range used by turn. Defaults to 65435
• MAX_PORT: This defines the max-port for the range used by turn. Defaults to 65535

An example:

# This makes sure, that the min- and max-port is the same for all environment variables
export MIN_PORT=50000
export MAX_PORT=50010
docker run \
  -d \
  -p 3478:3478 \
  -p 3478:3478/udp \
  -p ${MIN_PORT}-${MAX_PORT}:${MIN_PORT}-${MAX_PORT}/udp \
  -e USERNAME=another_user \
  -e PASSWORD=another_password \
  -e REALM=another_realm \
  -e MIN_PORT=${MIN_PORT} \
  -e MAX_PORT=${MAX_PORT} \
  --restart=always \
  --name coturn \
  boldt/coturn

Certificates

Store the cert under /opt/cert.pem and the key under /opt/pkey.pem and mount them as volumes:

docker run \
  -d \
  -p 3478:3478 \
  -p 3478:3478/udp \
  -p 65435-65535:65435-65535/udp \
  --volume /opt/cert.pem:/etc/ssl/turn_server_cert.pem \
  --volume /opt/pkey.pem:/etc/ssl/turn_server_pkey.pem \
  --restart=always \
  --name coturn \
  boldt/coturn

Debugging

docker logs coturn
docker exec -it coturn /bin/bash

Build and push the container

(For own documentation)

# Clone
git clone git clone git@github.com:boldt/turn-server-docker-image.git

# Build
docker build -t boldt/coturn .

# Tag
VERSION=0.0.2
docker tag boldt/coturn boldt/coturn:$VERSION

# Push
docker push boldt/coturn:latest
docker push boldt/coturn:$VERSION

Thanks

The initial image of this image was created by anastasiia-zolochevska/turn-server-docker-image