dtdflatten
Perl modules and scripts for manipulating SGML and XML DTDs
RUN apt-get update && \
apt-get install -y libsgml-dtdparse-perl
RUN apt-get update && \
apt-get install -y libsgml-dtdparse-perl
RUN apt-get update && \
apt-get install -y libsgml-dtdparse-perl
RUN apt-get update && \
apt-get install -y libsgml-dtdparse-perl