Run command as -privileged in Dockerfile

Question

I need bee -privileged to run a specific command in a Docker file, but I cannot find a way to tell docker for this.

Team RUN echo core > /proc/sys/kernel/core_pattern

If I put this in a Dockerfile, the build process will fail.

If I run Dockerfile with the specified line, but with the flag --privileged, then I can execute the command inside the container well.

Is there any solution to make everything work from a Docker file?

thank

Answer 1

Not really a "Dockerfile", but you can do it with a script entry point, provided that you always start the container with --privileged

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root@terrorbyte:~# docker run -it alpine cat /proc/sys/kernel/core_pattern
core
root@terrorbyte:~# echo core2 > /proc/sys/kernel/core_pattern
root@terrorbyte:~# docker run -it alpine cat /proc/sys/kernel/core_pattern
core2