[jenkins] Added JNLP port info to README
[jenkins] Added JNLP port info to README

zerocoolys/dockerfiles-1,itzg/dockerfiles,zerocoolys/dockerfiles-1,jbeda/itzg-dockerfiles,jbeda/itzg-dockerfiles,jbeda/itzg-dockerfiles,ajthemacboy/dockerfiles,sekka1/dockerfiles,sekka1/dockerfiles,zerocoolys/dockerfiles-1,sekka1/dockerfiles