make: turn ubuntu docker into template
This allows us to easily add more ubuntu docker targets (which following
patches will do).
Also, we no longer need the mkdir command.
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true