Serve build output using Netlify CLI in postBuild stage

[alexjfno1]

Describe the solution you'd like
We'd like to run the Cypress tests on post build so that we can ensure the files are built correctly. We have recently added some headers in the _headers file that we'd like to test using cypress. This means that we need to serve the build output using npx netlify dev. I can see a way to do this in the preBuild step but not on postBuild.

[bahmutov]

Does netlify CLI have a command similar to serve that serves the built folder BUT with functions and redirects? Because netlify dev would work great in preBuild step

[alexjfno1]

I'm not sure about functions but it does respect the _headers file. I was thinking that it could allow you to pass a custom command the same and start in the preBuild options. preBuild doesn't work for us as we want to serve the built assets from the Netlify build.

[bahmutov]

Hmm, I am not sure I understand how that would work. If you do

npx netlify build
npx netlify dev

Doesn't it serve the unbundled output and completely ignores the built dist folder? So it would be the same as simply npx netlify dev? I don't see any docs that would explain the difference.

[alexjfno1]

Currently the plugin allows a start argument in the preBuild which runs the command you specify. I'm proposing that you allow a start argument in the postBuild as well with the same functionality which runs whatever command you specify. Does that make sense?

[alexjfno1]

@bahmutov just to let you know I'm preparing a PR for this that should be finished in the next day or two.

[bahmutov]

🎉 This issue has been resolved in version 2.2.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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