В любом случае необходимо настроить - allow-insecure-ssl для docker deamon, созданного с помощью докер-машины.
команды:
docker-machine create --driver virtualbox dev
eval "$(docker-machine env dev)"
docker run myregistry:5000/busybox:latest echo 'hello world'
выход:
Unable to find image 'myregistry:5000/busybox:latest' locally
2015/06/04 16:54:17 Error: v1 ping attempt failed with error: Get
https://myregistry:5000/v1/_ping: EOF. If this private
registry supports only HTTP or HTTPS with an unknown CA certificate,
please add `--insecure-registry myregistry:5000` to the
daemon arguments. In the case of HTTPS, if you have access to the
registry CA certificate, no need for the flag; simply place the CA
certificate at /etc/docker/certs.d/myregistry:5000/ca.crt