Use ngrok with Docker

What is ngrok

ngrok can expose (tunnel) localhost to the outside world

How to do

Docker Hub has an image of wernight/ngrok ( It is often used in the image of ngrok and is easy to use.


version: "3.8"


    image: nginx:stable-alpine
    container_name: nginx
      - 80:80
      - default
      - app

    image: wernight/ngrok:latest
      - 4040:4040
      NGROK_PROTOCOL: http
      NGROK_PORT: nginx:80
      - nginx
      - default

The above exposes the nginx container as it is in ngrok. Just specify the container name and port to expose, such as NGROK_PORT: nginx: 80 in environment. NGROK_AUTH is not required if you do not use services that require authentication.

It's convenient and it's easy to use, so it's helpful ...! It seems to be very useful when developing an SSL-required non-self-certified external API such as Linebot locally.

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