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dockerdocker-registry

How do I connect to a web app running on an image on docker hub?

I am learning docker, just getting my feet wet... I begin begging your pardon since I will probably using terminology badly :-(

I have successfully built my first container and run it locally.
The container image is a node.js + express web app.
Locally I run my image this way:

docker run -p 80:3000 myname/myimage

If I point my browser to the local server IP

http://192.168.1.123:80/

I access my app in all of its glory.

Then, I push it to docker hub with this command:

docker push myname/myimage

So far so good. The question is: am I supposed to be able to run my app from docker cloud, already, or should I push it to AWS, for example?

Solution

  • By executing docker push myname/myimage you only sent your image to docker-hub. This image can then be run to create a container; but as is, it is not running.

    You effectively will have to run it on any machine or service in order to access your app.

    concerning the terminology:

    • you build an image, not a container
    • you push (or pull) an image to (from) docker-hub
    • you run a container from an image