Automated Install Scripts can configure the WebLogic environment including RCU, Config Wizard and Sites Configuration steps.
For customization, modify scripts inside wcs-wls-docker-install/src/main/groovy/com/oracle/wcsites/install/
Remove running sites containers if already created. Eg: docker rm -f WCSitesAdminContainer WCSitesManagedContainer Alert: All previous data in Sites instance will be lost.
Remove Oracle WebCenter Site Image if already created. Eg: docker rmi oracle/wcsites:12.2.1.3
Follow creating Oracle WebCenter Site Image refer section Building Oracle WebCenter Sites Docker Images