Updating Postgres Image Causes Containers to Use Untagged Image

Abstract: This article discusses an issue where updating a shared Postgres:16 image causes multiple containers to use an untagged image. We will provide a solution to this problem.

Created: 2025-02-27 by UserComp.com Editors

Docker Issue with Shared PostgreSQL:16 Image

Scenario

Multiple containers rely on the PostgreSQL:16 image.

Issue

When I update the PostgreSQL:16 image, the changes are not reflected in all the containers.

Steps to reproduce

Pull the updated PostgreSQL:16 image.
Run a new container using the updated image.
Verify that the new container is using the updated image.
Run an existing container.
Verify that the existing container is still using the old image.

Expected Result

Both new and existing containers should use the updated PostgreSQL:16 image.

Current Result

Existing containers continue to use the old image.

Solutions Tried

Stopping and starting all containers.
Rebuilding the containers.
Recreating the network and reconnecting the containers.

Environment

Docker version: 20.10.16

PostgreSQL:16 image: Pulled from Docker Hub.

References

Tags: Docker Postgres Image Update

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