refactor: updated backend packages

backend/Dockerfile

@@ -1,4 +1,4 @@
-FROM node
+FROM node:15
 
 RUN apt-get update
 

backend/logic/mongo/index.js

@@ -21,9 +21,7 @@ module.exports = class extends coreClass {
 
 			mongoose.connect(mongoUrl, {
 				useNewUrlParser: true,
-				useCreateIndex: true,
-				reconnectInterval: 3000,
-				reconnectTries: 10
+				useUnifiedTopology: true
 			})
 				.then(() => {
 					this._schemas = {

backend/package.json

@@ -1,13 +1,13 @@
 {
   "dependencies": {
-    "async": "^3.1.0",
-    "config": "^3.2.2",
+    "async": "^3.2.2",
+    "config": "^3.3.6",
     "express": "^4.17.1",
-    "mongoose": "^5.7.5",
+    "mongoose": "^6.0.14",
     "socket.io": "^2.3.0"
   },
   "scripts": {
     "dev": "nodemon .",
     "docker:dev": "nodemon -L /opt/app"
   }
-}
+}