docker:tldr:ea924

The command "docker pull --all-tags ${image}" is used to download or fetch the Docker image specified by the variable ${image} from the Docker registry. Here is an explanation of each part of the command:

• "docker pull": This is the Docker command that is used to download images from a Docker registry to your local machine.
• "--all-tags": This flag specifies that all available tags (versions) of the specified image should be downloaded. If this flag is not specified, only the latest tag will be downloaded.
• "${image}": This is a variable that represents the name of the image you want to download. You should replace ${image} with the actual name of the image you want to pull.

By running this command, Docker will fetch all the available tags of the specified image from the registry and store them locally on your machine. This allows you to access and use different versions of the image locally.