unable to load http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl
问题:unable to load http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl
解决:yum -y install docbook-style-xsl
问题:unable to load http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl
解决:yum -y install docbook-style-xsl