You may also want to search for Rudka, Ukraine in The JewishGen FamilyFinder (JGFF) . You will need to create and login with a JewishGen user account in order to see their information, but their website is free to use and extremely helpful.
Gesher Galicia has not yet catalogued any records or maps for Rudka, but we will be expanding our cataloguing at Polish and Ukrainian archives throughout 2017 and beyond. Check back soon for updates.