[fix] generate uuid

package.json

@@ -20,6 +20,7 @@
     "multer": "^1.3.0",
     "node-docker-api": "^1.1.22",
     "socket.io": "^3.0.4",
-    "strip-ansi": "^6.0.0"
+    "strip-ansi": "^6.0.0",
+    "uuid": "^8.3.2"
   }
 }

server.js

@@ -1,4 +1,6 @@
 const fs = require('fs')
+const { v4: uuidv4 } = require('uuid');
+
 const MAX_LEADERBOARD = 20
 
 // Web Server
@@ -321,7 +323,7 @@ io.on('connection', (socket) => {
     //  Client submited a new result
     socket.on('submit', (obj) => {
         console.log('[client][submit]', sessionID)
-        obj.data.id = sessionID
+        obj.data.id = uuidv4()
         update_leaderboard(obj)
         io.emit('leaderboard', leaderboard)
     })