How to run firefox inside docker container?

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I have one docker container in my centos base system. But I am not able to run firefox from my container.

How can I do that?

Apr 16 in Docker by akhtar
• 27,900 points

1 answer to this question.

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Generally, if you run firefox inside docker container you will get the below error.

[root@1c3a22e43538 /]# firefox
Failed to open connection to "session" message bus: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
Running without a11y support!
Error: no DISPLAY environment variable specified

But you can use firefox inside your docker container. Follow the below given steps.

  • Run xauth list command in your host machine and copy the cookies.

[root@vm1 ~]# xauth list
vm1/unix:0  MIT-MAGIC-COOKIE-1  b4c39c85be9a907749dd9395f4175b0d
  • Run docker container with environment variable Display and also mount /tmp/.X11-unix folder to your container.

[root@vm1 ~]# docker run -it --name firefox --net=host -e DISPLAY=$DISPLAY -v /tmp/.X11-unix centos:7 bash
[root@vm1 /]#
  • Install firefox and xauth inside container.

$ yum install firefox xauth
  • Add cookies that you copy from your host machine.

$ xauth add <cookies>
  • Run firefox inside docker container, it will work.

Hope this will help you.

answered Apr 16 by MD
• 64,660 points

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