Add github backend module and doc links to errors

Signed-off-by: Juan Escalada <juanescalada175@gmail.com>

packages/create-app/templates/default-app/packages/backend/src/index.ts

@@ -13,6 +13,7 @@ const backend = createBackend();
 backend.add(import('@backstage/plugin-app-backend'));
 backend.add(import('@backstage/plugin-proxy-backend'));
 backend.add(import('@backstage/plugin-scaffolder-backend'));
+backend.add(import('@backstage/plugin-scaffolder-backend-module-github'));
 backend.add(import('@backstage/plugin-techdocs-backend'));
 
 // auth plugin

plugins/scaffolder-backend-module-github/src/actions/helpers.ts

@@ -93,7 +93,7 @@ export async function getOctokitOptions(options: {
 
   if (!credentialProviderToken) {
     throw new InputError(
-      `No token available for host: ${host}, with owner ${owner}, and repo ${repo}`,
+      `No token available for host: ${host}, with owner ${owner}, and repo ${repo}. Make sure GitHub auth is configured correctly. See https://backstage.io/docs/auth/github/provider for more details.`,
     );
   }
 

plugins/scaffolder-backend/src/scaffolder/actions/TemplateActionRegistry.ts

@@ -37,7 +37,7 @@ export class TemplateActionRegistry {
     const action = this.actions.get(actionId);
     if (!action) {
       throw new NotFoundError(
-        `Template action with ID '${actionId}' is not registered.`,
+        `Template action with ID '${actionId}' is not registered. See https://backstage.io/docs/features/software-templates/builtin-actions/ on how to add a new action module.`,
       );
     }
     return action;