...
2) Move the binary to the fcrepo libraries
cp target/fcrepofcrepo4-oaiprovider-4.0.0-beta-04-SNAPSHOT.jar <CATALINA_HOME>/webapps/<fcrepo>/WEB-INF/lib
...
3) Copy the oai.xml file to the fcrepo config directory
cp fcrepofcrepo4-oaiprovider/src/main/resources/spring/oai.xml /<CATALINA_HOME>/webapps/<fcrepo>/WEB-INF/classes/spring/
...