Fixed the healthcheck endpoint (hopefully) on https

Author: ericallam

apps/webapp/app/routes/healthcheck.tsx

@@ -7,11 +7,15 @@ export const loader: LoaderFunction = async ({ request }) => {
 
   try {
     const url = new URL("/", `http://${host}`);
+
+    if (request.headers.get("x-forwarded-proto") === "https") {
+      url.protocol = "https:";
+    }
     // if we can connect to the database and make a simple query
     // and make a HEAD request to ourselves, then we're good.
     await Promise.all([
       prisma.user.count(),
-      fetch(url.toString(), { method: "HEAD" }).then((r) => {
+      fetch(url.href, { method: "HEAD" }).then((r) => {
         if (!r.ok) return Promise.reject(r);
       }),
     ]);