Option to disable uid=0 check

Inside Docker containers it’s often unavoidable/necessary to run processes as uid 0 but this module stubbornly refuses to run as uid 0.

I’ve monkey-patched the module to remove that check and everything seems to work fine so far so I’d suggest having an option like --allow-root or better yet, remove this opinionated check.

[silverwind]

It will refuse to run inside Docker as root at all with the Must drop privileges error. After I patched out that check, it runs just fine.

I run snmpsim inside a CI environment which always runs its jobs as uid=0 and I tried the --process-user=nobody and --process-group=nogroup arguments but then I ran into tempfiles permission errors (presumably fixed by https://github.com/etingof/snmpsim/commit/e9e1d5b8103cbe93f474de6e4a952dac7d06f41d but not released), so I gave up and patched out that check.

[frogmaster]

I agree with silverwind, the workaround is completely non-obvious, who would have thought you can provide root to process-user. I’ve spent a day messing with the permissions until i stumbled upon this issue.