docs: remove references to installing with yarn in favor of npm

[edvincent]

Follow-up of #5071 (comment) to update the docs.

Only left references to yarn commands for the development process.

[jsjoeio]

Woo! Thanks for doing this!

[codecov]

Codecov Report

Merging #5518 (ae4d210) into main (101d4ee) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@ Coverage Diff @@## main #5518 +/- ##
=======================================
Coverage 72.44% 72.44% =======================================
Files 30 30 Lines 1673 1673 Branches 366 366 =======================================
Hits 1212 1212 Misses 398 398 Partials 63 63 

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[edvincent]

Actually... Where's my head. Forgot about the --unsafe-perm that npm requires... Updating coming up!

[jsjoeio]

Actually... Where's my head. Forgot about the --unsafe-perm that npm requires... Updating coming up!

Nice catch! Remind me again, why do we need this?

[edvincent]

Nice catch! Remind me again, why do we need this?

https://github.com/coder/code-server/blob/main/ci/build/npm-postinstall.sh#L95-L101

Now, is it actually needed? Not sure. Definitely something I'm happy to look into in the future.

[jsjoeio]

I honestly can't remember. @code-asher might know. Probably fine to add for now then we can revert/fix if needed.

[code-asher]

I think we only need it if someone is installing code-server with root because NPM will drop permissions in the post install scripts making the code-server install fail.

[edvincent]

I think we only need it if someone is installing code-server with root because NPM will drop permissions in the post install scripts making the code-server install fail.

So we should add a check for the user running the script, and only show the warning if it's root? Happy to play around with that and send a separate PR for that in the next couple of days.

[code-asher]

Yeah I think that would be ideal!!