Can't specify a different CWD for the static server

[lucafaggianelli]

Hey there, thanks for this Action it's super useful!

It would be great if you can specify the CWD when running the static file server, basically I have a build step for HTML files and the output is in the dist/ folder, though my index is dist/index.html but given that the static file server is launched at the cwd, all my css and images imports are broken, so I need to run a special build to support the dist subpath.

In the end I think it would be enough to add a cwd input for the action so the static server would be started there.