Ubuntu's package archives report outage affecting some Docker builds

We're seeing degraded availability of Ubuntu's package archives, causing some Docker builds using them to fail. • Workloads running on GitHub Actions are automatically rerouted to different mirrors. • Docker builds using Ubuntu base images are seeing degraded performance and errors. Canonical has not yet acknowledges this incident on their status page, we'll continue to monitor availability and update this incident if the situation improves. A temporary workaround can be added to your Dockerfile until registries recover: Ubuntu 22.04 and earlier: RUN sed -i 's%http://\(archive\|security\).ubuntu.com/%http://azure.archive.ubuntu.com/%g' /etc/apt/sources.list Ubuntu 24.04 and later: RUN sed -i 's%http://\(archive\|security\).ubuntu.com/%http://azure.archive.ubuntu.com/%g' /etc/apt/sources.list.d/ubuntu.sources We recommend undoing these changes once registries recover to remain aligned with base images.