Context-based build plugin config

[verythorough]

This feature is now officially released!

Now available: configure Build Plugins by deploy context

We’re excited to announce that you can now configure your build plugins by deploy context. As a refresher, deploy contexts refer to the different types of deploys of your site on Netlify, including production deploys to your primary site URL, Deploy Previews, and branch deploys built from a specific branch of your site repository. With this new feature, you can choose which plugins run in each context, and configure plugins to run with different inputs per context. Enable Build Plugins by de…