This is my first docker. Adapting it for Unraid to automatically update Plex with the random NGrok URL.

This docker will use Ngrok to create a tunnel between your internal plex server to an outside url. Then will update the plex "Custom server access URLs" with the random Ngrok URL using PlexAPI. This allows you to login to plex.tv from any device and have a direct connection to your home plex server. Works from behind Carrier Grade NAT/double NAT and possibly VPN's.

Open Ports: Open TCP port 4040 in the Unraid ngrok docker web interface

Variable needed are:

Key = NGROK_PORT

Value = Plex_IP:32400 the port should always be 32400. The IP is what ever your plex server IP is. Most likely the same as your Unraid IP. Example Value = 192.168.1.20:32400

Key = NGROK_AUTH

Value = Ngrok Authtoken from their website after you've created an account

Key = PLEX_USER

Value = Plex username with adminitrative rights

Key = PLEX_PWORD

Value = Password for your plex user

Key = PLEX_SERVER

Value = Name of the plex server. The same one listed on the left side or on plex.tv. Most likely called 'tower'

Below is the original docker info from wernight. This is a fork with a custom python script, PlexAPI and python 3 installed.

Supported tags and respective Dockerfile links

• latest
• armhf

A Docker image for ngrok v2, introspected tunnels to localhost. It's based on the excellent work of wizardapps/ngrok and fnichol/ngrok.

Features

• Small: Built using busybox.
• Simple: Just link as http or https in most cases, see below; exposes ngrok server 4040 port.
• Secure: Runs as non-root user with a random UID 6737 (to avoid mapping to an existing UID).

Configuration

To see command-line options, run docker run --rm wernight/ngrok ngrok --help.

Usage

Supposing you've an Apache or Nginx Docker container named web_service_container listening on port 80:

$ docker run --rm -it --link web_service_container wernight/ngrok ngrok http web_service_container:80

Environment variables

Please consider using directly the command-line arguments of Ngrok.

If you use the default CMD (i.e. don't specify the ngrok command-line but only wernight/ngrok), then you can use instead envrionment variables magic below.

You simply have to link the Ngrok container to the application under the app or http or https aliases, and all of the configuration will be done for you by default.

Additionally, you can specify one of several environment variable (via -e) to configure your Ngrok tunnel:

• NGROK_AUTH - Authentication key for your Ngrok account. This is needed for custom subdomains, custom domains, and HTTP authentication.
• NGROK_SUBDOMAIN - Name of the custom subdomain to use for your tunnel. You must also provide the authentication token.
• NGROK_HOSTNAME - Paying Ngrok customers can specify a custom domain. Only one subdomain or domain can be specified, with the domain taking priority.
• NGROK_USERNAME - Username to use for HTTP authentication on the tunnel. You must also specify an authentication token.
• NGROK_PASSWORD - Password to use for HTTP authentication on the tunnel. You must also specify an authentication token.
• NGROK_PROTOCOL - Can either be HTTP or TCP, and it defaults to HTTP if not specified. If set to TCP, Ngrok will allocate a port instead of a subdomain and proxy TCP requests directly to your application.
• NGROK_PORT - Port to expose (defaults to 80 for HTTP protocol).
• NGROK_REGION - Location of the ngrok tunnel server; can be us (United States, default), eu (Europe), ap (Asia/Pacific) or au (Australia)
• NGROK_BINDTLS - Toggle tunneling only HTTP or HTTPS traffic. When true, Ngrok only opens the HTTPS endpoint. When false, Ngrok only opens the HTTP endpoint

Full example

1. We'll set up a simple example HTTP server in a docker container named www:

   $ docker run -v /usr/share/nginx/html --name www_data busybox true
   $ docker run --rm --volumes-from www_data busybox /bin/sh -c 'echo "<h1>Yo</h1>" > /usr/share/nginx/html/index.html'
   $ docker run -d -p 80 --volumes-from www_data --name www nginx
   $ curl $(docker port www 80)
   <h1>Yo</h1>
   

2. Now we'll link that HTTP server into an ngrok container to expose it on the internet:

   $ docker run -d -p 4040 --link www:http --name www_ngrok wernight/ngrok
   

3. You can now access the API to find the assigned domain:

   $ curl $(docker port www_ngrok 4040)/api/tunnels
   

   or access the web UI to see requests and responses:

   $ xdg-open http://$(docker port www_ngrok 4040)
   

Helper

For common cases you may want to create an alias in your ~/.profile (or ~/.bashrc, ~/.zshrc, or equivalent):

function docker-ngrok() {
  docker run --rm -it --link "$1":http wernight/ngrok ngrok http http:80
}
# For ZSH with Oh-My-Zsh! and 'docker' plugin enabled, you can also enable auto-completion:
#compdef __docker_containers docker-ngrok

Then to run the simple example just do docker-ngrok web_service_container.

For non dockerized http targets consider this helper function:

function expose-ngrok() {
  docker run --rm --net=host -e NGROK_PORT="$1" wernight/ngrok
}

and then visit localhost:4040 for receiving the links.

Feedbacks

Report issues/questions/feature requests on GitHub Issues.

Pull requests are very welcome!