Breaking changes (Engine)

Breaking changes and incompatibilities

Every Engine release strives to be backward compatible with its predecessors. In all cases, the policy is that feature removal is communicated two releases in advance and documented as part of the deprecated features page.

Unfortunately, Docker is a fast moving project, and newly introduced features may sometime introduce breaking changes and/or incompatibilities. This page documents these by Engine version.

Engine 1.10

There were two breaking changes in the 1.10 release.

Registry

Registry 2.3 includes improvements to the image manifest that have caused a breaking change. Images pushed by Engine 1.10 to a Registry 2.3 cannot be pulled by digest by older Engine versions. A docker pull that encounters this situation returns the following error: