fix(docker): deprecated MAINTAINER instruction

Author: PauloASilva

VMs/Dockerfile

@@ -1,6 +1,6 @@
 # This dockerfile builds a container that pulls down and runs the latest version of BenchmarkJava
 FROM ubuntu:latest
-MAINTAINER "Dave Wichers dave.wichers@owasp.org"
+LABEL org.opencontainers.image.authors="Dave Wichers dave.wichers@owasp.org"
 
 RUN apt-get update
 RUN DEBIAN_FRONTEND="noninteractive" apt-get -y install tzdata