Document what it looks like to use a conda-lock environment file

[mfisher87]

On my first attempt to use this action with a conda-lock file, I encountered a fairly unintuitive error message. I discovered I just needed to specify an environment name, and I thought this doc change might help someone else out there :)

[pavelzw]

Thanks for the addition!

What setup-micromamba does internally is search for a name: ... in the environment.yml file. If it doesn't find anything and environment-name is not set, an error is raised. In a lock file, though, the action can find a name: ... and thinks incorrectly that the environment name is set.

[pavelzw]

Thanks @mfisher87!

[jonashaag]

@pavelzw I think we should add a ^ to the regex here

setup-micromamba/src/util.ts

Line 53 in cc9a6fb

const environmentName = fileContents.toString().match(/name:\s*(.*)/)?.[1]

[pavelzw]

That's a good idea!