Add proxy for napari.org

[codemonkey800]

Adds a proxy server for https://napari.org. This allows us to serve the assets for napari.org in production, while using our local JS and CSS for styling. This allows us to test against existing bugs on napari.org that only impact the JS or CSS.

[jni]

Would you mind summarising this in jargon-free language for non-web-devs? 😅 In the context of #113, I'd like the theme itself to be general and not contain references to napari.org — that should be some sort of configuration. For example, plugins might want to use the theme (I know some already do), so they would want to use a different URL presumably?

[codemonkey800]

Would you mind summarising this in jargon-free language for non-web-devs? 😅 In the context of #113, I'd like the theme itself to be general and not contain references to napari.org — that should be some sort of configuration. For example, plugins might want to use the theme (I know some already do), so they would want to use a different URL presumably?

So essentially when accessing http://localhost:8080, instead of the local theme contents, it skips the local theme build and serves assets from https://napari.org like a proxy. Every file, except for the napari-sphinx-theme.js and napari-sphinx-theme.css files. These files are transpiled using our Webpack bundler and served dynamically as we make changes to the SCSS and TSX code. This allows us to fix JS and CSS specific issues while skipping the sphinx build step, effectively increasing start to dev time nearly 5x - 10x.

We can make the URL configurable though, I can pass it as an environment variable.

[codemonkey800]

Alright I moved it to an env var, but keeping https://napari.org as the default so I don't have to pass it for every build. If someone wants to use this, they can run:

PROD_URL=https://example.com yarn dev:prod

[jni]

Thanks! To clarify, this doesn't actually affect anything post-build, only during development, right?

[codemonkey800]

Thanks! To clarify, this doesn't actually affect anything post-build, only during development, right?

yep that's right! only for development