This patch completes part of the work in #20 by porting the code
for faas-containerd in-tree. When tested, I was able to deploy
and then remove figlet from the store on `x86_64`.
In a follow-up PR, duplication will be removed where possible
and consolidated with updated documentation.
Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>
