Before 2b9a4d5f4c9c4d749ecc208f34d212a2b1c45a08, this function
would use "errors.Wrap" which returns nil if the original error
was nil. fmt.Errorf does not do this, so without a nil check,
it would unconditionally return an error;
docker context create arm64 --docker host=ssh://172.17.101.26,skip-tls-verify=False
unable to create docker endpoint config: name: %!w(<nil>)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>