A simple container hosting the Jetty 9 servlet container.
WEBAPPS=/somewhere/on/host/webapps mkdir $WEBAPPS # so it is owned by you, not root docker run -p 80:8080 -v $WEBAPPS:/opt/jetty/webapps jglick/jetty-demo &
Then to hot-deploy web apps:
cp something.war $WEBAPPS
and browse: http://localhost/something/
(Or http://localhost/ lists currently running applications.)
Logs are sent to standard output so you can easily follow status.