I wanted to try the new Ubuntu 24.04 Noble Numbat based .NET docker image and updated the base docker image in our CI pipeline to mcr.microsoft.com/dotnet/sdk:8.0-noble. However, it results in an out-of-memory exception. Based on my investigation, the exception occurs specifically when the update-ca-certificates command is executed. I can also repro the issue with ubuntu:noble image which means it's not specific to .NET docker images. It works fine with Jammy, by the way. The problem likely lies with the Noble base image rather than the .NET image. I'm not sure what changes were made between Jammy and Noble, but it appears that updating certificates consumes a lot of memory in Noble. I adjusted some memory settings in our GitLab runner, but it didn't resolve the issue. I attached all Gitlab Runner shell logs for .NET 8 Jammy, .NET 8 Noble and Ubuntu Noble images.
Status changed to 'Confirmed' because the bug affects multiple users.