appc-spec binary package in Ubuntu Xenial armhf

 App Container (appc) is a well-specified and community developed
 specification for application containers. appc defines several independent
 but composable aspects involved in running application containers,
 including an image format, runtime environment, and discovery mechanism
 for application containers.
 .
 This package provides "actool" utility for the App Container (appc)
 specification and technical details on how an appc image is downloaded
 over a network, cryptographically verified, and executed on a host.

Source package