change CRA "PUBLIC_URL" post build process

[kkarkos]

Hi,

your comment on facebook/create-react-app#2353 brought me here. I'm facing the problem that a client wants to serve ONE CRA build on different static server without using pipelines etc.. So the "PUBLIC_URL" would need to change post build based on a config file so the files can be server from the correct "static" folder.

You are writing

When serving the files, I also implemented some best-match redirects to allow the app base url (PUBLIC_URL) to be configured at runtime as well.

Could you please point me in the right direction? I can't find anything about "best-match redirects" in the docs.

Cheers

[pscanf]

Hey @kkarkos , sorry for the late reply, I saw the issue while on vacation and then forgot about it.

The comment you quoted was a bit inaccurate on my part, and so maybe a bit misleading. app-server does not dynamically change your app's PUBLIC_URL, rather, it serves the correct content even when you set PUBLIC_URL (at build time) to ., making all links relative. The outcome though is basically the same: at runtime you can change the base url of the app without having to rebuild it (though you might have to change app-server's config option --basePath, but that's a runtime configuration). Here you can find a bit of documentation explaining how requests are routed so that the correct content is served.

I actually forgot to add this info to the doc on how to use app-server with CRA, I will put it in now.

Thanks for reporting, let me know if you still have issues