> The results of a successful Maven build are copied to the EAP_HOME/standalone/deployments/ directory inside the JBoss EAP for OpenShift image. This includes all JAR, WAR, and EAR files from the source repository specified by the $ARTIFACT_DIR environment variable. The default value of $ARTIFACT_DIR is the Maven target directory.

In s2i assemble process, in addition to the ARTIFACT_DIR, the war/rar/ear files in APP_ROOT/deployments will be copied to EAP_HOME/standalone/deployments/ directory like APP_ROOT/configuration and APP_ROOT/modules. However this popular feature is not documented.

https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.1/html-single/red_hat_jboss_enterprise_application_platform_for_openshift/#eap_s2i_process