The docker load -i command will load the docker image from the tar file. List the images of remote hostĪs you see above, there is no image on the target host because we have not imported the image yet. Now let’s list the images on this host to see whether alpine images exist or not there. So transferring the tar file of the image is successfully completed.
When I check the destination path of the tar file which we sent, alpiner.tar has already been there. Then we will connect to the remote machine which is another host via ssh. Here we select the python image and the 3.7 version (as tag) FROM python:3.7 or. You could use scp or another file transfer tool such as rsync. The following is the Dockerfile: FROM selects the image to find on docker hub and selects the tag specified. Next, copy your image to your target system. To export the alpine image to a tar file, run the docker save -o command, specifying a name for the. It is that much easy to copy Docker images from one host to another without using a repository.įirst of all, let’s check the existed images by running docker images: List of the host machine images You can then use the docker load command to load the Docker image back from the tar file into another host. This command also compresses images and enables sharing them easily and quickly. Docker allows you to save images into tar files using the docker save. The most common and robust method is saving and loading images from tar files. Copy Docker images from one host to another by tar files
DOCKER RUN IMAGE FROM TAR HOW TO
But what if we don’t want to use a repository? I will show you how to cut corners. With the docker pull command, download your image from the Docker Hub repo to that host machine. Now, you should go to the machine you want to move. Then you need to tag the image and push it to the repo. For instance, you can push your image to a repository in Docker Hub. In this case, using a public or private registry is typically the first option. You need to copy Docker images from one host to another for various reasons.
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