Environment variable TERM cannot be overwritten

[galou]

I use rocker --network host --device /dev/dri/card0 --x11 --pulse --user --home --env "DISPLAY" "XDG_CONFIG_HOME=~/.config" TERM=xterm-256color -- my_image. The final docker call is docker run -it --rm --device /dev/dri/card0 --device /dev/dri/card0 -e DISPLAY -e 'XDG_CONFIG_HOME=~/.config' -e TERM=xterm-256color -v /home/gael:/home/gael --network host -v /run/user/1000/pulse:/run/user/1000/pulse --device /dev/snd -e PULSE_SERVER=unix:/run/user/1000/pulse/native -v /run/user/1000/pulse/native:/run/user/1000/pulse/native --group-add 29 -e DISPLAY -e TERM -e QT_X11_NO_MITSHM=1 -e XAUTHORITY=/tmp/.docker.xauth -v /tmp/.docker.xauth:/tmp/.docker.xauth -v /tmp/.X11-unix:/tmp/.X11-unix -v /etc/localtime:/etc/localtime:ro d3ddfa229ca8.

The TERM environment is set twice and the last one takes TERM from the calling environment, which in my case doesn't work because this particular terminal is not installed in the image. I know some workarounds but this is inconvenient.

[tfoote]

The best approach to resolve this is for the x11 plugin which is generating those to be able to query for command line arguments that would mask it and use that here:

rocker/src/rocker/nvidia_extension.py

Line 49 in 4f9f6d7

return " -e DISPLAY -e TERM \

I'm not sure how complicated it would be to do that lookup and resolution. The quicker solution would be to simply make sure that the user set environment variables come later in the arguments so that they win. And this will allow all things to be manually overridden.

[galou]

I chose the second option: PR #130 .