Originally published on TechSaaS Cloud

Docker v29.5.x Operator Upgrade Checklist

Docker upgrades should not be driven by release headlines. They should be driven by an operator test matrix. That is especially true for v29.x environments where engine behavior, client libraries, BuildKit, Compose, networking, and host security settings can all interact with real workloads.

If your feed says Docker v29.5.2, v29.5.x, or another patch in the same line is ready, do not turn that into a fleet-wide upgrade. Turn it into a canary.

This article deliberately avoids pretending that every patch note can be summarized safely from memory. The useful operator action is stable: test the parts of Docker your production systems depend on before the shared hosts move.