Adding docs for using Docker.
Adding docs for using Docker.

msmolens/girder,Kitware/girder,data-exp-lab/girder,chrismattmann/girder,RafaelPalomar/girder,opadron/girder,essamjoubori/girder,salamb/girder,adsorensen/girder,kotfic/girder,chrismattmann/girder,Xarthisius/girder,Kitware/girder,msmolens/girder,girder/girder,salamb/girder,jcfr/girder,manthey/girder,msmolens/girder,jcfr/girder,girder/girder,salamb/girder,jbeezley/girder,girder/girder,jcfr/girder,opadron/girder,opadron/girder,chrismattmann/girder,RafaelPalomar/girder,essamjoubori/girder,adsorensen/girder,essamjoubori/girder,RafaelPalomar/girder,salamb/girder,jcfr/girder,manthey/girder,kotfic/girder,adsorensen/girder,girder/girder,Kitware/girder,manthey/girder,kotfic/girder,msmolens/girder,RafaelPalomar/girder,adsorensen/girder,data-exp-lab/girder,sutartmelson/girder,Xarthisius/girder,sutartmelson/girder,essamjoubori/girder,kotfic/girder,Kitware/girder,adsorensen/girder,Xarthisius/girder,salamb/girder,opadron/girder,msmolens/girder,RafaelPalomar/girder,Xarthisius/girder,sutartmelson/girder,sutartmelson/girder,jcfr/girder,Xarthisius/girder,jbeezley/girder,data-exp-lab/girder,jbeezley/girder,essamjoubori/girder,manthey/girder,opadron/girder,chrismattmann/girder,kotfic/girder,data-exp-lab/girder,chrismattmann/girder,sutartmelson/girder,data-exp-lab/girder,jbeezley/girder