Cannot get to start: DNS error

[ValentinFunk]

To run the application it says to run
$ cd node-server $ node server.js

In my node-server folder there is no server.js. Only a file called app.js. When running it i get this error:

c9@appdev:~/WebAPI-Nodejs/node-server$ node app.js | bunyan [2015-06-15T07:58:55.971Z] INFO: Windows Azure Active Directory Sample/1927 on appdev: MongoDB Schema loaded [2015-06-15T07:58:56.051Z] INFO: Microsoft OpenID Connect: Passport Strategy/1927 on appdev: Audience provided to Strategy was: http://<mserver's IP>:8888/ [2015-06-15T07:58:56.053Z] INFO: Microsoft OpenID Connect: Passport Strategy/1927 on appdev: Metadata url provided to Strategy was: https://login.microsoftonline.com/hypercubeb2c.onmicrosoft.com/.well-known/openid-configuration?p=b2c_1_B2CSI/ [2015-06-15T07:58:56.054Z] INFO: Microsoft OpenID Connect: Passport Strategy/1927 on appdev: Req: undefined

/home/c9/WebAPI-Nodejs/node-server/node_modules/mongoose/node_modules/mongodb/lib/server.js:228 process.nextTick(function() { throw err; }) ^ Error: getaddrinfo ENOTFOUND at errnoException (dns.js:37:11) at Object.onanswer as oncomplete

[brandwe]

you must have MongoDB installed as the instructions state.

[ValentinFunk]

Thanks