[Documentation] Remove Docker-based install from the installation guide
Our install guide currently documents installing Arvados from Docker images, either our pre-built versions or from source. Unfortunately, the Docker installation has a number of bugs that mean it's unlikely to work for someone out of the box. See #7000, #7007, #5876, #5625, #5284, and #4886.
We'll fix these eventually, but until that's done, remove any pages or suggestions about installing from Docker images from the install guide. After this story, the install section should be dedicated to the current "manual install."
Integrate information from the "build from source" Docker page into the wiki at https://arvados.org/projects/arvados/wiki/Development_and_testing_with_Docker