Fix gem dependencies in docker file
Fixes the `chef-utils` and `mdl` gem dependencies in
`Dockerfile.x86_64`.
@@ -75,7 +75,9 @@ RUN apt-get update \
setuptools \
wheel \
&& python3 -m pip install --upgrade pip \
- && gem install chef-utils:16.6.14 mdl
+ && gem install \
+ chef-utils:16.6.14 \
+ mdl:0.11.0
# Update Python to 3.10
# This method isn't ideal, compiling from source can be dropped
