Publishing Docker Image to the Docker Hub

In this tutorial we will go over how to publish an image you have created to the public docker hub. You will need to create a docker hub account to continue.

Login to your Docker Hub account on your docker host.

Simply execute the following and input your credentials:

docker login

Create Repository

One of docker’s advantages is it’s git like work flow. If you are a git user, this process should look familiar. We will need to create a repository on the Docker Hub. This can be done by logging into the Docker Hub, hitting create repository, and filling out the necessary information. For simplicity, I named my repository the same as our image from the previous tutorial (nginx). You will need to change dopensource to whatever your account name is.

Screen Shot 2016-05-01 at 3.57.02 PM

Push image to repository.

You will need an image on your system to push to the Docker Hub. If you followed our previous tutorials, you should have an nginx image built on CentOS 7.

  1. Print local docker images available:
    docker images

    Screen Shot 2016-05-01 at 3.59.22 PM

  2. Now, push the dopensource/nginx image to our docker repository.

    docker push dopensource/nginx
  3. Pull your public image

    You should already have your image on your docker host, as that is where you created it from. You can either delete the local image, or try pulling from another host.

    docker rmi -f dopensource/nginx

    Now pull your public image to confirm everything is working as intended:

    docker pull dopensouce/nginx

    You should now have a runable nginx container on your system.