* make docker: build a docker image for redoctober
* add a convenient entrypoint to generate certificates out of the box
* add detection based on RO_CERTS and RO_KEYS
instead of detection based on the presence of RO_DATA, add RO_CERTS and RO_KEYS
which are paths to the ceritificates and keys so we can generate them more
effectively.
Signed-off-by: Daniel Dao <dqminh@cloudflare.com>
* dockerfile: bump golang to 1.7.1