Downloading the first Docker image
Having installed the Docker Engine successfully, the next logical step is to download the images from the Docker Registry. The Docker Registry is an application repository that hosts various applications, ranging from basic Linux images to advanced applications. The docker pull
subcommand is used to download any number of images from the registry. In this section, we will download a sample hello-world
image using the following command:
$ sudo docker pull hello-world Using default tag: latest latest: Pulling from library/hello-world 78445dd45222: Pull complete Digest: sha256:c5515758d4c5e1e838e9cd307f6c6a0d620b5e07e6f927b07d05f6d12a1ac8d7 Status: Downloaded newer image for hello-world:latest
Once the images have been downloaded, they can be verified using the docker images
subcommand, as shown here:
$ sudo docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE hello-world latest 48b5124b2768 6 weeks ago 1.84 kB