chore(docs): simplify publishing GitHub pages by Docker

[bednar]

trafficstars

Proposed Changes

Simplify publishing GitHub pages by Docker to be platform independent.

This PR also change the Deploy Maven site from ReleaseCycleSettings.md to:

mvn site site:stage -DskipTests

docker run -it --rm \
       -v "${PWD}":/code \
       -v ~/.ssh:/root/.ssh \
       -v ~/.gitconfig:/root/.gitconfig \
       -w /code \
       bitnami/git /code/scripts/publish-site.sh

Checklist

• [x] Rebased/mergeable
• [x] mvn test completes successfully
• [x] Commit messages are conventional
• [x] Sign CLA (if not already signed)