demo: add a sample container that just contains curl
demo: add a sample container that just contains curl

This is useful for demonstrating how entry points and functionality
can be delivered in containers

Signed-off-by: Bruce Ashfield <284cc737d174a260eec2a2a6324a304f84b1ae0f@gmail.com>

lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization