Netlify Build plugin identity-sso - Protect a site with SSO via identity.

The recommended way to install this right now is using a git npm dependency:

package.json

{
  // ...
  "dependencies": {
    "netlify-plugin-identity-sso": "netlify/netlify-plugin-identity-sso#v0.1.0"
  }
}

netlify.toml

[[plugins]]
package = "netlify-plugin-identity-sso"

• Go to Settings -> Identity on your site and click Enable Identity

• Add a third-party auth provider, e.g. Google

• Setup the identity webhook:

  • URL: https://<site-name>.netlify.app/.netlify/functions/sso-auth
  • Secret: Generate a long random string
  • Events: Tick all boxes

• Set the webhook secret as a build environment variable WEBHOOK_SECRET for use in the function

• Do not use a cached directory for publishing. For some reason this breaks writing of a custom netlify.toml as part of the build.
• This is hardcoded to allow any user with a @netlify.com email address.