The main gain here is that they all use exactly the same distro; previously arm64 was using Ubuntu Xenial because Debian jessie was too old. Does not seem that we can change any of the downloaded dependencies still, as eg libseccomp is still not the version we are using. Signed-off-by: Justin Cormack <justin.cormack@docker.com> Upstream-commit: e89a5e5e91476102a471797fc2a81aa2f0f2b3fb Component: engine