Fix healthcheck endpoints

pages/health/alive.tsx

@@ -0,0 +1,23 @@
+import { ServerResponse } from "http"
+import { GetServerSideProps } from "next"
+import React from "react"
+
+// Use Node.js's ServerResponse
+
+const Alive = () => {
+  return <div>Healthy!</div>
+}
+
+export const getServerSideProps: GetServerSideProps = async ({
+  res,
+}: {
+  res: ServerResponse
+}) => {
+  res.statusCode = 200
+
+  return {
+    props: {},
+  }
+}
+
+export default Alive

pages/health/ready.tsx

@@ -0,0 +1,21 @@
+import { ServerResponse } from "http"
+import { GetServerSideProps } from "next"
+import React from "react"
+
+const Ready = () => {
+  return <div>Ready!</div>
+}
+
+export const getServerSideProps: GetServerSideProps = async ({
+  res,
+}: {
+  res: ServerResponse
+}) => {
+  res.statusCode = 200
+
+  return {
+    props: {},
+  }
+}
+
+export default Ready