Unable to run docker node.js application

Question

I am new to Docker , so I may not be able to frame my question correctly.

I have created an image for my node js application by using below command.

 docker build -t ramakishore/nodeapp .

I have created a container for this image by executing below command

docker run -p 49160:8080 -d ramakishore/nodeapp

docker ps command displays

CONTAINER ID        IMAGE                 COMMAND             CREATED             STATUS              PORTS                     NAMES
ca64b61afca7        ramakishore/nodeapp   "npm start"         6 minutes ago       Up 6 minutes        0.0.0.0:49160->8080/tcp   gigantic_swanson

Contents of my dockerFile are

FROM node:boron

# Create app directory
RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app

# Install app dependencies
COPY package.json /usr/src/app/
RUN npm install

# Bundle app source
COPY . /usr/src/app

EXPOSE 8080
CMD [ "npm", "start" ]

When I type http://localhost:8080 in chrome , I was expecting my node page to be displayed, but instead "This site can’t be reached" is displayed.

Any idea what is the mistake I doing.

What enviroment are you on? Are you using docker for windows or docker on windows. If you are using docker on windows you will have a virtual mashine in virtualbox, and then you won't be able to reach localhost, then you will need to go to the adress of the virtual mashine — Fore
– Fore, Commented Jan 13, 2017 at 8:41

Chris McKinnel · Accepted Answer · 2017-01-13 08:49:28Z

1

First I would check to see if your application is running inside your docker container by entering the container and looking at what is running:

$ docker exec -ti ca64b61afca7
$ ps aux

Then check to make sure it's listening on the correct port (and on 0.0.0.0):

$ netstat -tunlp

Next I would try a curl from inside the container:

$ curl localhost:8080

If this works, your app is running correctly and the issue lies between your container and your host.

Next I would exit the docker container (ctrl + d) and try to hit the app from the host:

$ curl localhost:49160

Note: If you're on a Mac or Windows, you may need to hit the IP address of the docker host - you can find this IP by doing an echo $DOCKER_HOST (or on Windows echo %DOCKER_HOST%.

E.g., if your DOCKER_HOST is 192.168.1.50 you would do a:

curl 192.168.1.50:49160

answered Jan 13, 2017 at 8:49

Chris McKinnel

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1 Comment

refactor Over a year ago

using "ip" instead of "localhost" helped , now it's working...thanks

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