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Docker Image Versions

Versioning Rule

Zephyr Docker image uses the major.minor.revision version format:

• major is always 0.
• minor is incremented for every Zephyr release.
• revision is incremented for every new Docker image release.

Each major.minor version is associated with a specific Zephyr release and hence a Zephyr release branch (vX.Y-branch).

For example, the Zephyr Docker image version 0.28.x is associated with Zephyr 4.2 release and the Zephyr v4.2-branch tracks the CI image v0.28.x.

Compatibility Levels

Image Version	Zephyr Version
0.26	3.7
0.28	4.2
0.29	main