Prerequisite

docker-ce

To check if you have docker installed.

$ docker --version
Docker version 18.06.1-ce, build e68fc7a

If not, do

sudo apt-get update
sudo apt-get install  \
  apt-transport-https \
  ca-certificates     \
  curl                \
  software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo apt-key fingerprint 0EBFCD88
sudo add-apt-repository \
  "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"
sudo apt-get update
sudo apt-get install docker-ce

Get the repo

git clone git@github.com:kittcar/devcontainer.git 

Build the container

cd devcontainer
source devsetup.sh
docker-compose build

devsetup.sh exports environment variables for graphics forwarding.

Run the container

docker-compose run devcontainer bash
root@24cf9780bc57:~#

Test graphics forwarding

root@24cf9780bc57:~# xeyes

You should see some eyes pop up, which confirms that the naive X11 forwarding is working.