Updates

dante/Dockerfile

@@ -1,5 +1,5 @@
 FROM ubuntu
-MAINTAINER rmj014@gmail.com
+LABEL org.opencontainers.image.authors="rmj014@gmail.com"
 RUN apt-get update && apt-get -y upgrade \
  && apt-get install -y iputils-ping curl net-tools iptables dante-server
 RUN apt-get install -y vim