feat: Add a compose file

backend/src/main.ts

@@ -1,4 +1,5 @@
 import * as express from "express";
+import * as cors from "cors";
 
 import * as bodyparser from "body-parser";
 
@@ -34,12 +35,13 @@ authRouter.use(async (req, res, next) => {
 
 const app = express();
 app.use(bodyparser.json());
-app.use((req, res, next) => {
-    // TODO: Change this to our domain
-    res.append("Access-Control-Allow-Origin", "*");
-    res.append("Access-Control-Allow-Headers", "Content-Type,Token");
-    next();
-});
+// app.use((req, res, next) => {
+//     // TODO: Change this to our domain
+//     res.append("Access-Control-Allow-Origin", "*");
+//     res.append("Access-Control-Allow-Headers", "Content-Type,Token");
+//     next();
+// });
+app.options("*", cors());
 
 app.use("/api/level", LevelRouter);
 app.use("/api/class", ClassRouter);