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Release Notes for .NET 9.0 containers
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Chapter 1. Container names
The container images are:
- registry.access.redhat.com/ubi8/dotnet-90
- registry.access.redhat.com/ubi8/dotnet-90-runtime
Chapter 2. New features
The Release Notes for .NET 9.0 containers is an extension of the Release Notes for .NET 9.0 RPM packages. See Release Notes for .NET 9.0 RPM packages for information about known issues, the operating system architecture, privacy, and support.
Chapter 3. Known issues
The
dnfcommand is not available.To reduce image size, .NET 9.0 container images use the
ubi-minimalbase image instead of the ubi base image. Theubi-minimalimage uses themicrodnfcommand as its package manager instead of thednfcommand.If your Dockerfiles/Containerfiles use the
dnfcommand, you must change them to use themicrodnfcommand instead.For more information about the
microdnfcommand, please see themicrodnfman page on your system.-
Support for the
DOTNET_SSL_DIRSenvironment variable used to load certificates from additional directories has been removed in favor of using theSSL_CERT_DIRenvironment variable that is supported since .NET 8.0. - The runtime image no longer supports source-to-image (S2I) building an application image from pre-built .NET artifacts. Users are encouraged to use the .NET SDK directly to build application images layered on a runtime image. The SDK image may be used as a workaround because it also supports building from pre-built .NET artifacts. The resulting application image will then be based on the SDK image rather than the runtime image.
See Known Issues in the .NET 9.0 Release Notes for .NET 9.0 RPM packages for a list of known issues and workarounds for RPMs.
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