Image Management

Images and image indexes are the foundation of container images within a repository. The following diagram shows the relationship between images and image indexes.

This structure enables multi-architecture support through a single reference. It is important to note that images are not always referenced by an image index. The following objects are shown in the diagram.

• Image index: An image that points to multiple architecture-specific images (like AMD and ARM), letting a single reference work across different platforms.
• Image: Individual container images that contain the actual configuration and layers for a specific architecture and operating system.

Manage repository images and image indexes

1. Sign in to Docker Hub.

2. Select My Hub > Repositories.

3. In the list, select a repository.

4. Select Image Management.

5. Search, filter, or sort the items.

   • Search: In the search box above the list, specify your search.
   • Filter: In the Filter by drop-down, select Tagged, Image index, or Image.
   • Sort: Select the column title for Size, Last pushed, or Last pulled.

   Note

   Images that haven't been pulled in over 6 months are marked as Stale in the Status column.

6. Optional. Delete one or more items.

   1. Select the checkboxes next to the items in the list. Selecting any top-level index also removes any underlying images that aren't referenced elsewhere.
   2. Select Preview and delete.
   3. In the window that appears, verify the items that will be deleted and the amount of storage you will reclaim.
   4. Select Delete forever.