Dealing with the message "unknown flag: --build-arg" with docker run

Question

The next cmd returns the error: unknown flag: --build-arg Why?

docker run --name=my_dev_server --network=host --privileged \
     -v /dev:/dev \
       --build-arg USERNAME=`${USER}` \
       --user=`id -u ${USER}` \
       --env="DISPLAY" \
       --volume="/etc/group:/etc/group:ro" \
       --volume="/etc/passwd:/etc/passwd:ro" \
       --volume="/etc/shadow:/etc/shadow:ro" \
       --volume="/etc/sudoers.d:/etc/sudoers.d:ro" \
       --volume="/tmp/.X11-unix:/tmp/.X11-unix:rw" \
      -it jccz/android_dev:v1 /bin/bash

because --build-arg is for build

Alberto
– Alberto

2021-08-27 21:49:33 +00:00
Commented Aug 27, 2021 at 21:49 — Alberto
– Alberto, Commented Aug 27, 2021 at 21:49

Alberto · Accepted Answer · 2021-08-27 21:51:32Z

5

There is no --build-arg option for run, it's available only for build

answered Aug 27, 2021 at 21:51

Alberto

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