In commit 4b35c3829d, example shim erroneously started to depend on runc, fix that back.
Also, build example shim on all supported platforms to prevent such situations in the future.
Signed-off-by: Marat Radchenko <marat@slonopotamus.org>
		
	
Example Shim
This directory provides skeleton code as the starting point for creating a Runtime v2 shim. This allows runtime authors to quickly bootstrap new shim implementations.
For full documentation on building a shim for containerd, see the Shim Documentation file.