Improvement the docker command line example

[daamien]

• the -it flag is used when you want an interactive shell, it is useless in this context

• the --rm flag will remove the container after the job is done, this is very important because it will save a lot of space on the end user's computer

• the -u defines the user id that will be used inside the container, this is really convenient because the output files will belong to the user who launches docker

As a comparison, here how you launche the pandoc docker image:

docker run --rm --volume "`pwd`:/data" --user `id -u`:`id -g` pandoc/latex:2.6 README.md

see https://github.com/pandoc/dockerfiles#basic-usage

[MindaugasLaganeckas]

Thank you 😄