I use Docbook locally with org.apache.xml.resolver and I have found that you have an error in build-docbook-catalog script. There is one line missing and in other two lines are some characters more: * change "-//OASIS//ENTITIES DocBook XML" -> "-//OASIS//ENTITIES DocBook" otherwise it will doesn't resolve "-//OASIS//ENTITIES DocBook Notations V4.4//EN" * change "-//OASIS//DTD DocBook XML" -> "-//OASIS//DTD DocBook" otherwise it will doesn't resolve "-//OASIS//DTD DocBook CALS Table Model V4.4//EN" * add "-//OASIS//ELEMENTS DocBook" otherwise it will doesn't resolve "-//OASIS//ELEMENTS DocBook Information Pool V4.4//EN"
Created attachment 132380 [details, diff] build-docbook-catalog-1.2.patch Patch for app-text/build-docbook-catalog-1.2 which will solve the problem with the local resolver.
Thanks for reporting, fixed in 1.5.