DevOps and Docker Talk: Cloud Native Interviews and Tooling
DevOps and Docker Talk: Cloud Native Interviews and Tooling
Bret Fisher
Your Images are Out of Date (probably) - The Silent Rebuilds problem
36 minutes Posted Mar 4, 2026 at 7:23 pm.
) Intro
) Docker Security and Image Builds
) CVEs in Containers
) Where we were
) Silent Builds and Mutable Tags
) Docker Official Image Tags Are Rebuilt Often
) Chainguard's Tool
) Tag Tracker Tool Overview
) High Fivers DevOps Group
) Problem of Silent Rebuilds
) Post-Stream Updates
Intro
Docker Security and Image Builds
CVEs in Containers
Where we were
Silent Builds and Mutable Tags
Docker Official Image Tags Are Rebuilt Often
Chainguard's Tool
Tag Tracker Tool Overview
High Fivers DevOps Group
Problem of Silent Rebuilds
Post-Stream Updates
0:00
36:41
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Show notes
Container base images (like Official Docker Hub images) are often updated without new tag versions. I call this Silent Rebuilds. There's no way to know this happens without image digest-checking automation like Dependabot and Renovate with specific settings. Failure to keep up-to-date is a prime source of vulnerabilities that can lead to serious security breaches. Automate the updates!Check out the video podcast version here: https://youtu.be/z_ahbsSc4Fo😇 My new GitHub Security workshop has launched! A free 2-hour workshop with hands-on labs to harden your repos and your workflows from common supply chain attacks. I'll cover how attackers are getting in, and then we'll lock down a sample repo so you know what needs to be done to protect your code. You'll leave with a deep understanding of risks and mitigations as well as a list of helpful tools to keep your repos safe, including my new "gasa" tool for scanning your repos and orgs.★Show Links★Course waitlist: GitHub Actions Prohttps://www.bretfisher.com/blog/silent-rebuildshttps://github.com/BretFisher/silent-rebuildshttps://www.bretfisher.com/chainguard-eventCreators & Guests
Cristi Cotovan - Editor
Bret Fisher - Host
Beth Fisher - Producer
Nirmal Mehta - Host
You can also support this podcast by subscribing to my YouTube channel and my monthly newsletter at bret.news!Grab the best coupons for my GitHub, Agents, Docker, and Kubernetes courses.Join my cloud native DevOps community on Discord.Grab some merch at Bret's Loot BoxHomepage bretfisher.com
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