The instructions in the examples' readme files says, e.g. :

Deploying to JBoss AS
---------------------

Make sure you have assigned the absolute path of your JBoss AS installation to the
JBOSS_HOME environment variable.

To deploy the example run:

   mvn jboss-as:run

Now you can view the application at <http://localhost:8080/weld-numberguess>.

This is imprecise, running "mvn jboss-as:run" will ignore JBOSS_HOME property and download AS 7.1.1.

workaround is to add -Djboss-as.home=${JBOSS_HOME}

(I am not sure if the readme files should be changed, or the jboss-as-maven-plugin to be configured to read the JBOSS_HOME property)

see http://docs.jboss.org/jbossas/7/plugins/maven/final/run-mojo.html#jbossHome