Refactor Dockerfile structure
Build docker base images first
Merge pull request #2 from acrellin/pep8-conform

Line lengths conform to PEP8 standards
Merge branch 'rf/docker_images' of https://github.com/stefanv/mltsp into stefanv-rf/docker_images
Merge branch 'stefanv-rf/docker_images'
Merge pull request #1 from stefanv/rf/docker_images

Refactor docker images
Fix docker images to point to correct repo
Merge pull request #3 from stefanv/bug/docker_image_org

Fix docker images to point to correct repo
Fix docker images to point to correct repo
Added function docstrings
Merge branch 'master' into docs_layout
Includes merge from stefanv/bug/docker_img_org
Added function docstrings