GUI Container on Docker Container

In this blog, we will launch GUI application (Firefox) inside a docker container.

Pre-requisites :-

• Docker installed (Redhat8 as the base OS)

Steps:-

• First, after installing docker and starting its services. you need to pull one docker image.
• Pull one image using $docker pull “OS_Name”

$docker pull centos

• Then After our image is pulled successfully, we need to run our image. To run docker image.

$docker run -it centos

• Now let’s install GUI application firefox inside the container.

$yum install firefox -y

• After the installation let’s start firefox.

$firefox

• It shows error because there no display environment variable specified. So we required some display environment to run GUI applications in our docker container.
• So we need to define DISPLAY while launching container.
• Now launch one more docker container with env $DISPLAY.
• Open BaseOS terminal now, and run command:

$docker run -it — net=host — env=”DISPLAY” centos

• Now again install firefox and run it.
• After opening firefox Now, We can see a firefox web browser is open.