Make your local development can be accessed with a public URL

Install ngrok

• Download ngrok

wget https://bin.equinox.io/c/4VmDzA7iaHb/ngrok-stable-linux-amd64.zip

• Then run:

 unzip ngrok-stable-linux-amd64.zip

• Connect to your account.

./ngrok authtoken your-authentication-token

• Get your-authentication-token from https://dashboard.ngrok.com/
• This will add your authentication token to ~/.ngrok2/ngrok.yml, a default configuration file.

Configure ngrok region

• Open ~/.ngrok2/ngrok.yml.

vi ~/.ngrok2/ngrok.yml

• Add region key and a valid region [us, eu, au, ap, sa, jp, in] (default: us).
• To use Asia Pacific region, use the following configuration.

authtoken: your-authentication-token
region: ap

• Save a configuration and quit (:wq).

Start ngrok to serve a public URL

• Use the following command to start ngrok and forward a public URL to localhost port 8000.

./ngrok http 8000

• You will logging messages like this:

ngrok by @inconshreveable
Session Status                online
Account                       your-email-address (Plan: Free)
Version                       2.3.40
Region                        Asia Pacific (ap)
Web Interface                 http://127.0.0.1:4040
Forwarding                    http://7bf181875b76.ap.ngrok.io -> http://localhost:8000
Forwarding                    https://7bf181875b76.ap.ngrok.io -> http://localhost:8000
Connections                   ttl     opn     rt1     rt5     p50     p90
                              0       0       0.00    0.00    0.00    0.00

• Press ctrl+c to exit the process.

Configure ngrok to serve multiple ports

• Open ~/.ngrok2/ngrok.yml

vi ~/.ngrok2/ngrok.yml

• Add the following contents:

authtoken: your-authentication-token
region: ap
tunnels:
  ui:
    addr: 3000
    proto: http
  api:
    addr: 3001
    proto: http

• Save a configuration (:wq) and start ngrok with a command:

./ngrok start --all

Credit

• More info https://stackoverflow.com/a/38645042/1872200
• https://stackoverflow.com/a/36018377/1872200