* add fedora docker image to travis compilation
fixes#1746
* add dockerfile
* would you like to please install for me? [y/n]
* remove bc dependency
* save cache separately for different docker builds
* add development packages to fedora dockerfile
* add package names
* use env values to make these all look the same
* set docker image name correctly
* add missing dependency
* minor oversight, add %% to remove all braces in check schema
