tomcat-rad-docker/README.md

Apache Tomcat Application Container Image with Hot-Reloading

This project creates a Docker image that has uses the Java Hotswap Docker Image to support hot-reloading for the enablement of rapid application development. As a Docker image, containers can be started to facilitate development without requiring complicated installations on developer workstations.

It is expected that containers are configured in Maven using the Fabric8 or Spotify Docker plugins. These configurations should expose the 8080 (HTTP) and 8000 (debugger) ports and any other port that the application may open. Most importantly, it should mount/bind the source code to the following possible paths.

Directory	Type	Hot-Reloaded	When
/var/lib/tomcat/dev/classes	Classpath	Yes	Before WAR
/var/lib/tomcat/dev/classes-extra1	Classpath	Yes	Before WAR
/var/lib/tomcat/dev/classes-extra2	Classpath	Yes	Before WAR
/var/lib/tomcat/dev/classes-extra3	Classpath	Yes	Before WAR
/var/lib/tomcat/dev/classes-extra4	Classpath	Yes	Before WAR
/var/lib/tomcat/dev/classes-extra5	Classpath	Yes	Before WAR
/var/lib/tomcat/dev/classes-extra6	Classpath	Yes	Before WAR
/var/lib/tomcat/dev/classes-extra7	Classpath	Yes	Before WAR
/var/lib/tomcat/dev/post-rsrc	Classpath	Yes	After WAR
/var/lib/tomcat/dev/post-rsrc-extra1	Classpath	Yes	After WAR
/var/lib/tomcat/dev/post-rsrc-extra2	Classpath	Yes	After WAR
/var/lib/tomcat/dev/post-rsrc-extra3	Classpath	Yes	After WAR
/var/lib/tomcat/dev/lib	JARs	No	Before WAR
/var/lib/tomcat/dev/lib-extra1	JARs	No	Before WAR
/var/lib/tomcat/dev/lib-extra2	JARs	No	Before WAR
/var/lib/tomcat/dev/lib-extra3	JARs	No	Before WAR
/var/lib/tomcat/dev/lib-extra4	JARs	No	Before WAR
/var/lib/tomcat/dev/lib-extra5	JARs	No	Before WAR
/var/lib/tomcat/dev/lib-extra6	JARs	No	Before WAR
/var/lib/tomcat/dev/lib-extra7	JARs	No	Before WAR
/var/lib/tomcat/dev/post-lib	JARs	No	After WAR
/var/lib/tomcat/dev/post-lib-extra1	JARs	No	After WAR
/var/lib/tomcat/dev/post-lib-extra2	JARs	No	After WAR
/var/lib/tomcat/dev/post-lib-extra3	JARs	No	After WAR
/var/lib/tomcat/dev/web	Web	Yes	Before WAR
/var/lib/tomcat/dev/web-extra1	Web	No	Before WAR
/var/lib/tomcat/dev/web-extra2	Web	NO	Before WAR
/var/lib/tomcat/dev/web-extra3	Web	NO	Before WAR
/var/lib/tomcat/dev/web-extra4	Web	No	Before WAR
/var/lib/tomcat/dev/web-extra5	Web	No	Before WAR
/var/lib/tomcat/dev/web-extra6	Web	No	Before WAR
/var/lib/tomcat/dev/web-extra7	Web	No	Before WAR

You may include your own hotswap-agent.properties in any of the classes folders. The one loaded by default is usually sufficient. It most notably disables the Hotswap Agent Hibernate plugin.