dashboard: suggest using gp rebuild when image build fails

Author: Andrea Falzetti

components/dashboard/src/start/StartWorkspace.tsx

@@ -799,9 +799,25 @@ function ImageBuildView(props: ImageBuildViewProps) {
                 <WorkspaceLogs logsEmitter={logsEmitter} errorMessage={props.error?.message} />
             </Suspense>
             {!!props.onStartWithDefaultImage && (
-                <button className="mt-6 secondary" onClick={props.onStartWithDefaultImage}>
-                    Continue with Default Image
-                </button>
+                <>
+                    <div className="mt-6 w-11/12 lg:w-3/5">
+                        <p className="text-center text-gray-400 dark:text-gray-500">
+                            <span className="font-bold">Did you know?</span> You can use <code>gp rebuild</code> to
+                            validate and debug your custom workspace image before pushing &nbsp;&middot;&nbsp;
+                            <a
+                                href="https://github.com/gitpod-io/gitpod/issues/6576"
+                                target="_blank"
+                                rel="noopener noreferrer"
+                                className="gp-link"
+                            >
+                                Read More
+                            </a>
+                        </p>
+                    </div>
+                    <button className="mt-6 secondary" onClick={props.onStartWithDefaultImage}>
+                        Continue with Default Image
+                    </button>
+                </>
             )}
         </StartPage>
     );