Build Configuration

In Netlify, your build configuration can be updated at Settings > Build & Deploy > Build Command.

If your package.json has a "build" script like tinacms build && <your-site-build-cmd>, this likely doesn't need to be changed. If your Netlify config is not running a custom build script (e.g next build), you would have to change this to tinacms build && next build

If your project has a netlify.toml with a build command set, that will take precedence over the above build command UI

Environment variables

Assuming that your Tina clientID and token are setup as environment variables, you will need to add those to the Netlify UI for your project. You can learn more about environment variables here.