added deploying a docker image to docker hub

backend/.env.example

@@ -0,0 +1,3 @@
+PORT=8080
+CONNECTION_URI=your_mongodb_connection_uri
+NODE_ENV="development"

backend/config/database.js

@@ -1,9 +1,7 @@
-const CONNECTION_URI = require('../credentials.js');
-
 module.exports = function (mongoose) {
     mongoose.set('useFindAndModify', false);
     mongoose
-        .connect(CONNECTION_URI, {
+        .connect(process.env.CONNECTION_URI, {
             useNewUrlParser: true,
             useUnifiedTopology: true,
             dbName: 'test',

backend/config/session.js

@@ -1,8 +1,8 @@
 const session = require('express-session');
-const CONNECTION_URI = require('../credentials.js');
 const MongoDBStore = require('connect-mongodb-session')(session);
+
 const store = new MongoDBStore({
-    uri: CONNECTION_URI,
+    uri: process.env.CONNECTION_URI,
     collection: 'sessions',
 });
 const sessionMiddleware = session({

backend/credentials.js

@@ -1,2 +0,0 @@
-// Write your own mongoDBatlas credentials here
-module.exports = '';

backend/package-lock.json

@@ -10,6 +10,7 @@
         "connect-mongodb-session": "^3.1.1",
         "cookie-parser": "^1.4.5",
         "cors": "^2.8.5",
+        "dotenv": "^16.3.1",
         "express": "^4.17.1",
         "express-session": "^1.17.1",
         "mongoose": "^5.12.0",
@@ -708,6 +709,17 @@
         "node": ">=0.3.1"
       }
     },
+    "node_modules/dotenv": {
+      "version": "16.3.1",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.3.1.tgz",
+      "integrity": "sha512-IPzF4w4/Rd94bA9imS68tZBaYyBWSCE47V1RGuMrB94iyTOIEwRmVL2x/4An+6mETpLrKJ5hQkB8W4kFAadeIQ==",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/motdotla/dotenv?sponsor=1"
+      }
+    },
     "node_modules/ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -3157,6 +3169,11 @@
       "integrity": "sha512-/VTCrvm5Z0JGty/BWHljh+BAiw3IK+2j87NGMu8Nwc/f48WoDAC395uomO9ZD117ZOBaHmkX1oyLvkVM/aIT3w==",
       "dev": true
     },
+    "dotenv": {
+      "version": "16.3.1",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.3.1.tgz",
+      "integrity": "sha512-IPzF4w4/Rd94bA9imS68tZBaYyBWSCE47V1RGuMrB94iyTOIEwRmVL2x/4An+6mETpLrKJ5hQkB8W4kFAadeIQ=="
+    },
     "ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",

backend/package.json

@@ -5,6 +5,7 @@
     "connect-mongodb-session": "^3.1.1",
     "cookie-parser": "^1.4.5",
     "cors": "^2.8.5",
+    "dotenv": "^16.3.1",
     "express": "^4.17.1",
     "express-session": "^1.17.1",
     "mongoose": "^5.12.0",

backend/server.js

@@ -1,10 +1,12 @@
 const express = require('express');
 const cors = require('cors');
+const path = require('path');
 const cookieParser = require('cookie-parser');
 const mongoose = require('mongoose');
+require('dotenv').config();
 const { sessionMiddleware } = require('./config/session');
 
-const PORT = 8080;
+const PORT = process.env.PORT;
 
 const app = express();
 
@@ -30,9 +32,10 @@ require('./config/database')(mongoose);
 require('./config/socket')(server);
 
 if (process.env.NODE_ENV === 'production') {
-    app.use(express.static('/app/build'));
-    app.get('/', (req, res) => {
-        res.sendFile('/app/build/index.html');
+    app.use(express.static('./build'));
+    app.get('*', (req, res) => {
+        const indexPath = path.join(__dirname, './build/index.html');
+        res.sendFile(indexPath);
     });
 }