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Dotnet 6 Docker Container in Ubuntu 22.04 Is Available

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.NET 6 is now available with Chiseled Ubuntu Containers. Our friends at Canonical have developed a new chisel approach for making ultra-small container images. We’re very excited about it. The Chiseled Ubuntu image is 100MB smaller than the Ubuntu images you’ve been using until now!

Here’s the command to pull the new ASP.NET Chiseled image:

docker pull mcr.microsoft.com/dotnet/nightly/aspnet:6.0-jammy-chiseled

We also updated our dotnetapp and aspnetapp samples so that you can try out .NET with Chiseled Ubuntu Containers.

These new container images significantly improve security posture:

  • Ultra-small images (reduced size and attack surface)
  • No package manager (avoids a whole class of attacks)
  • No shell (avoids a whole class of attacks)
  • Non-root (avoids a whole class of attacks)

To top that off, Canonical and Microsoft are committed to working together to ensure that new .NET releases are available with new Ubuntu releases and that they work well together. This includes security updates and secure delivery of container images.

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