config.json:

{
  "oidc_providers": {
		"github": {
			"icon": "github",
			"display_name": "Sign in with GitHub",
			"client_id": "***",
			"client_secret": "***",
			"redirect_url": "https://your-domain.com/api/auth/oidc/github/redirect",
			"endpoint": {
				"auth": "https://github.com/login/oauth/authorize",
				"token": "https://github.com/login/oauth/access_token",
				"userinfo": "https://api.github.com/user"
			},
			"scopes": ["read:user", "user:email"],
			"username_claim": "|",
			"email_claim": "email | {{ .id }}@github.your-domain.com",
			"name_claim": "name",
			"order": 1
		}
  }
}