'Permission Denied' error when running math service on Linode server

[metasoarous]

Discussed in #1683

^{Originally posted by @TechnoGecko May 12, 2023}
So I've built the Polis container on a server, and all the services seem to run fine except for the math service. When it gets to this Dockerfile, which has CMD ["./bin/run"] at the bottom, the terminal outputs:

polis-dev-math-1         | /usr/local/bin/entrypoint: line 21: /app/bin/run: Permission denied
polis-dev-math-1 exited with code 126

Is this a pathing issue maybe? I'm running the command sudo docker compose up --build from the server as the root user, so I'm confused as to why I'd be running into permission problems. Any ideas/help would be greatly appreciated, and I can provide more info if needed. Thank you

[metasoarous]

Hi @TechnoGecko. Thanks for reporting this.

I'm not sure what might be causing this, but I would suggest trying to first set up docker to run as a non-root user (that is, without sudo). This shouldn't be a problem, and if it is, then I'd consider it a bug, but there are details pertaining to volume mapping that might be leading to issues running as root.

Any other info you can provide about OS you're running on, docker & docker compose versions, etc?

Thanks again

[TechnoGecko]

So it seems like this should have been obvious to me, but I'm fairly new to Linux environments: I had to run chmod +x <filename> on the /math/bin/run file and the math server spins up just fine now.