dotnet/dotnet-docker#4715 changed the User Id for the Linux images, and we didn't update at the same time. A longer-term fix would detect and parse the user id from the specified container environment variable if it is present, but we haven't implemented that yet. That work is tracked in dotnet/sdk-container-builds#479.

This error has already been reported by a user in dotnet/dotnet-docker#4766.

Without this change, container images generated by our tooling from preview 6 onwards are broken unless the user

• sets their own ContainerUser value (<ContainerUser>1654</ContainerUser>), or
• sets the user for the container explicitly at container runtime (docker run -u XXXX)