Add moreutils

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: shanemcd

mybox/Containerfile

@@ -66,6 +66,7 @@ RUN <<EORUN
         go-task \
         just \
         libtool \
+        moreutils \
         python-devel \
         python-virtualenvwrapper \
         ripgrep \