Tiny docker image with ngrok

I’ve found an excellent tiny Docker image for ngrok (wernight/ngrok). From now just using it to handle this blog.

Some handy snippets. Note, it’s possible to use docker-compose commands, i.e. to check tunnels curl $(docker-compose port ngrok 4040)/api/tunnels, but I’m using $(docker ps -l -q --filter "name=blog_ngrok") statement to identify container ID, as it works with both docker-compose “up” and “run” modes and with docker without using docker-compose.

Logs

BLOG=$(docker ps -l -q --filter "name=blog_ngrok")
docker logs -f $BLOG

Check open ngrok tunnels

BLOG=$(docker ps -l -q --filter "name=blog_ngrok")
curl $(docker port $BLOG 4040)/api/tunnels

Open browser window with ngrok http console

BLOG=$(docker ps -l -q --filter "name=blog_ngrok")
open http://$(docker port $BLOG 4040)

It is how docker-compose file looks like for this Jekyll site:

version: '3'

volumes:
  ruby-cache:
    driver: local

services:
  build:
    image: jekyll/jekyll
    volumes:
      - ruby-cache:/usr/local/bundle
      - ./:/srv/jekyll
    command: jekyll build

  jekyll:
    image: jekyll/jekyll
    volumes:
      - ruby-cache:/usr/local/bundle
      - ./:/srv/jekyll
    command: jekyll serve --incremental --watch
    ports:
      - 127.0.0.1:4000:4000

  ngrok:
    image: wernight/ngrok
    links:
      - jekyll
    stdin_open: true
    tty: true
    ports:
      - 127.0.0.1:4040:4040
    environment:
      - NGROK_REGION=eu
      - NGROK_AUTH=...
      - NGROK_SUBDOMAIN=...
      - NGROK_PROTOCOL=http
      - NGROK_PORT=jekyll:4000