I'm sure this is very simple for those who knows how it's done, but I don't... I have a command line that is supposed to start Firefox to NRK streaming, the Norwegian counterpart to BBC, with an SSH message from the Docker container Node-RED runs in on the same Pi. This is the command I use: sshpa…

Finally found it. And it was so simple that it's embarassing... DISPLAY=:0 before firefox was all that was needed! :person_facepalming: Thanks for the input, @TotallyInformation !

[image] Mastiff: I think I understand why, it's because the command isn't sent to the GUI session that I have open on the Pi. But how should I do this to make it wor You should be able to add the environment variable setting before the command. If you do an internet search, you should easily …

Thanks for answering! Especially when it's ran from a Docker container, as I do, which is it's own environment in itself. I tried to searh for environment variable, but the answers only confused me more, I'm afraid... I am running as the standard user pi, if that helps any.

[image] Mastiff: Docker container Ah, you probably should have led with that. :wink: I've updated the tags on this thread accordingly. [image] Mastiff: I am running as the standard user pi, if that helps any. Not really :smiley:. I'm not much good with Docker - but I'm fairly good at…

Actually I did lead with that, in the first message. :grinning_face: But if I understand what you have found correctly it is not the same. I do not want to expose the desktop to the container, I only want to be able to send the command with SSH to the host.

Trying to run Firefox on Pi with exec node and SSH - Error: no DISPLAY environment variable specified

General

TotallyInformation 6 February 2026 20:01 6

My bad.

You've not chosen an easy approach and I'd question whether you are getting any benefit at all from using Docker for Node-RED? But if you really have to do it that way, first you will have to have a method for safely accessing the host from the container - I have to assume that you've done that?

Then the command you run on the host has to be prefixed with setting the display environment variable.

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Trying to run Firefox on Pi with exec node and SSH - Error: no DISPLAY environment variable specified

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