Docker ambassador with ssl tunneling.
SERVER_KEY (cat $FILENAME.pem) CLIENT_KEY (cat $FILENAME.crt)
openssl genrsa -out $FILENAME.key 1024
openssl req -batch -nodes -new -key $FILENAME.key -x509 -days 3653 -out $FILENAME.crt
cat $FILENAME.key $FILENAME.crt > $FILENAME.pem