docs: update Docker apt-get best practice reference #1107
Merged
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Issue
The Docker best practice article referenced in CONTRIBUTING > Omit apt-get clean has moved to https://docs.docker.com/build/building/best-practices/#apt-get
Change
Update the link
Best practices for writing Dockerfilesin CONTRIBUTING > Omit apt-get clean to Docker Manuals > Docker Build > Building images > Best practices > Dockerfile instructions > RUN > apt-get and consolidate the reference into one place in this section.