Updated link to new docker-node-hello repository
Add documentation build steps for the next release manager to follow.

Docker-DCO-1.1-Signed-off-by: SvenDowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
Merge pull request #5924 from SvenDowideit/docs-build-instructions

Add documentation build steps for the next release manager to follow.
Merge pull request #6140 from zanedeg/patch-1

Updated link to new docker-node-hello repository