Hi! I'm trying to write a plugin, which runs a Docker container. The container is supposed to build Python Wheels and I would like to mount a host directory into the container. Docker requires the mounts to be specified as absolute paths, though. Is there a way to retrieve the absolute Path of the current working directory (i.e. /tmp/processExecution…)?

you can request the

BuildRoot

type, and then relativize to that

Exactly, I'm in a rule. I do request

BuildRoot

and work with that at the moment. It feels a bit like I'm sidestepping the sandbox, though. I just thought there might be a nicer way, but I'll just stick with BuildRoot : ) Thanks @witty-crayon-22786!

@full-policeman-85126: you are sidestepping the sandbox, for sure.

Yes

if so, the right way to ensure that

docker

reruns as things change would be to capture a

Digest

of the inputs to

docker

, and include those in the arguments to the

Process

Good point! I didn't think of that. The basic idea was to build wheels for PEXes when there is a

platform

option specified in

pex_binary

. The plan is to inject them as dependencies to the PEX target. I think I already have most of it in place, but I was curious about the Docker volume mounts.