migration to DigitalOcean

File storage migrated to DigitalOcean Storage

package.json

@@ -11,6 +11,7 @@
   "license": "ISC",
   "dependencies": {
     "@azure/storage-blob": "^12.2.0-preview.1",
+    "aws-sdk": "^2.789.0",
     "axios": "^0.20.0",
     "bcryptjs": "^2.4.3",
     "body-parser": "^1.19.0",
@@ -25,6 +26,7 @@
     "jsonwebtoken": "^8.5.1",
     "mongoose": "^5.9.22",
     "multer": "^1.4.2",
+    "multer-s3": "^2.9.0",
     "nodemailer": "^6.4.11",
     "nodemon": "^2.0.4",
     "string-sanitizer": "^1.1.1",