Simple UI for docker

Docker has a REST api called "Remote API" and the following steps will help to expose it in order to be used by a simple UI. The UI is a Beego app and the API is exposed through a reverse proxy.

How to expose the "Docker Remote API"

sudo nano /etc/systemd/system/docker.service.d/remote-api.conf
# add the following lines:
Service]
ExecStart=
ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:4243 -H unix:///var/run/docker.sock

stackoverflow question: Enable Docker Remote API - raspberry pi / raspbian

How to setup NginX

# installation
sudo apt-get install nginx
# nginx restart (after modifying configuration file)
sudo nginx -s reload

First you have to open the nginx configuration file and then locate the part for the http configuration:

# open the file
sudo nano /etc/nginx/nginx.conf

# and then try to find the http part:
http {
   ...
}

Inside http you have to put the following settings:

server {
  listen 9090;

  location / {
    proxy_pass http://localhost:8080/;
  }

  location /rpi/ {
    proxy_pass http://10.143.0.218:4243/;
  }
}

What this actually does:

• we have a server listening at port 9090
• common url requests are forwarded to the Beego app (location /)
• other requests with urls that contain /rpi/ are forwarded to the Docker Remote API (location /rpi/)

How to run the Beego app

This is a Beego app, so you have to go to your "Go"/src directory, clone this git project and launch it:

# something like this...
cd ~/gowork/src
git clone https://github.com/tgogos/rpi_docker_ui.git
cd rpi_docker_ui
bee run watchall # this runs at port 8080