Predictive Hacks

How To Share Docker-Images Without Docker Hub?

The most common way to share docker images is by using the Docker Hub. So you can easily get a docker image by using the command (for postgres) docker pull postgres and you can push it to Docker Hub with the command docker push <username/tagname>. Let’s see how we can share docker images by skipping Docker Hub. We will create a tar file as follows:

Creation of image tar file from Docker image

docker save <username/tagname> > myname.tar

So if my image was gpipis/predictivehacks and I wanted to store it to a file called myshared.tar it would be:

docker save gpipis/predictivehacks > myshared.tar

Load an image from a tar file

Now, since we have the tar file we can load the image as follows.

docker load -i myshared.tar

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