Docker container mongoDb connection to server.

docker-compose.yaml

 version: '3'
 
 services:
-  mongo:
+  mongodb:
     image: mongo
     ports:
       - 27017:27017
@@ -14,6 +14,10 @@ services:
       - 3000:3000
     volumes:
       - ./:/code
+    depends_on:
+      - mongodb
+    environment:
+      WAIT_HOSTS: mongodb:27017
       
 volumes:
  mongodb:

index.js

@@ -27,6 +27,21 @@ const { resolve } = require('path');
 //DB Connection
 mongoose.connect("mongodb://127.0.0.1:27017/cloudComputing");
 
+
+
+/* const connectWithRetry = () => {
+  mongoose
+    .connect('mongodb://mongo:27017/cloudComputing', {useNewUrlParser: true})
+    .then(() => console.log("succesfully connected to DB"))
+    .catch((e) => {
+      console.log(e);
+      setTimeout(connectWithRetry, 5000);
+    });
+};
+
+connectWithRetry(); */
+
+
 app.use(bodyParser.json());
 //Routes
 app.use('/register', registerRoute);