Docker Content Trust: Retirement and Migration Guidance
Docker Content Trust (DCT) and the Notary v1 service at notary.docker.io are being fully retired, as announced in July 2025. This blog details the changes, affected users, and migration paths to modern alternatives. DCT, introduced ten years ago, gave the container ecosystem one of its first ways to sign container images. The retirement affects users relying on DCT for image signing and verification. Docker provides guidance on moving to current solutions, though specific alternative tools or versions are not named in the excerpt.
// why it matters
Developers using DCT must migrate to modern image signing alternatives before the service is fully retired.