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Using host system toolbox version: toolbox-0.0.99.2^3.git075b9a8d2779-4.fc35

I create a RHEL 8.5 container image and enter it:

$ toolbox create --image registry.access.redhat.com/ubi8/toolbox:8.5 ubi-toolbox-8.5
$ toolbox enter ubi-toolbox-8.5

Then in the container, I run:

⬢[mcatanzaro@toolbox ~]$ dnf --help

The first thing dnf prints is:

Failed to set locale, defaulting to C.UTF-8

I think this is because my host locale is en_US.UTF-8, and toolbx propagates the locale from the host system even though it does not exist in the container? Not sure what to do about that.

*** This bug has been marked as a duplicate of bug 2184006 ***

Try these within the image:
# rm /etc/rpm/macros.image-language-conf
# dnf -y swap glibc-minimal-langpack glibc-all-langpacks

This should be fixed for the toolbox:8.9 and toolbox:9.3 images.