Setup website `Deploy Preview` for the PR

[ylemkimon]

netlify.com is a CI for websites, which provides a deploy preview:

Deploy Preview: Deploy generated from a pull request or merge request, building the site as it would be if the proposed changes were merged. Deploy Previews are published to a URL which has the prefix deploy-preview followed by the identifier number of the pull request or merge request. For example, pull request #42 will automatically trigger a Deploy Preview at deploy-preview-42--yoursitename.netlify.com.

Websites using docusarus can be deployed using following configuration:

• Build command: npm run build; cd website; npm install; npm run build;
• Publish directory: website/build/KaTeX

CC @kevinbarabash

[kevinbarabash]

Being able to easily check documentation changes before merging would be awesome.

[kevinbarabash]

I have it deploying to https://katex.netlify.com/katex/. I guess I have to set the CONTEXT variable to get it to deploy to https://katex.netlify.com.

[kevinbarabash]

The CONTEXT variable is supposed to be set automatically so I'm not sure why we're not picking it up. I'm going to try the BASE_URL environment variable instead.

[ylemkimon]

@kevinbarabash Please check the publish directory is website/build/KaTeX.

[kevinbarabash]

I set it to website/build... trying website/build/KaTeX now.

[kevinbarabash]

@ylemkimon that did the trick, thanks. https://katex.netlify.com

[kevinbarabash]

I've also turned on branch deploys so this should trigger a deploy next time someone creates a PR or updates one. 🤞

[kevinbarabash]

I've updated one of our open PRs. There's now a netlify checking that shows up. Clicking on the "details" link goes to the preview site. In this case it's https://deploy-preview-1485--katex.netlify.com.