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Saving and loading images

The Docker CLI allows us to export and import Docker images and container layers using export/import or save/load Docker commands. The difference between save/load and export/import is that the first one works with images including metadata, but the export/import combination uses only container layers and doesn't include any image metadata information such as name, tags, and so on. In most cases, the save/load combination is more relevant and works properly for images without special needs. The docker save command packs the layers and metadata of all the chains required to build the image. You can then load this saved images chain into another Docker instance and create containers from these images.

The docker export ...