Doc update: use :ro modifier on volume mount example #5
Description
The container does not need write access to the host's repositories, so for safety sake, it's better to force read-only access by appending the :ro modifier to the -v command line option.
I.e. change this:
docker run --rm=true -p 8888:80 -v /path/repo:/repos gitlist
to this:
docker run --rm=true -p 8888:80 -v /path/repo:/repos:ro gitlist