fix: linux compatibility and testing

[supernovahs]

Motivation:

Support running devnet on both linux and mac

Modifications:

• Added GetDockerHost() function that detects the operating system and returns the appropriate Docker host:
  Linux: localhost (containers can access host via localhost)
  macOS/Windows: host.docker.internal (required for Docker Desktop)
• Supports DOCKERS_HOST environment variable override
  Added EnsureDockerHost() function that intelligently converts localhost URLs for container→host communication:
• Uses URL parsing to avoid breaking domains like localhost.mydomain.com
  Includes regex fallback for malformed URLs
• Only replaces exact hostname matches for localhost and 127.0.0.1

Result:

Testing:

unit tests

Open questions:

[bdchatham]

My gut thinking is we should just have a workflow that goes through the happy path of setting up a project via devkit commands. I might have seen we already have something like this. It could be a standard set of commands that run across all platforms we support. Then we can move this hand-rolled go execution into the unit test suite.

[supernovahs]

My gut thinking is we should just have a workflow that goes through the happy path of setting up a project via devkit commands. I might have seen we already have something like this. It could be a standard set of commands that run across all platforms we support. Then we can move this hand-rolled go execution into the unit test suite.

we have a e2e test in the ci for this . But i don't why it didn't capture the issue. even though it runs on ubuntu

[bdchatham]

That CI works because it's using the DOCKERS_HOST field which Graham looks to have added to support selecting the network based on.

stale