Fix issue with Perl dependencies in Docker image

.docker/Dockerfile

@@ -9,6 +9,8 @@ RUN apt install -y curl wget bash git make jq
 RUN apt install -y perl build-essential librdf-query-perl librdf-query-client-perl libexpat1-dev libssl-dev zlib1g-dev
 RUN yes | cpan App::cpanminus
 RUN cpanm -n App::skos2jskos Catmandu Catmandu::MARC Catmandu::Breaker Catmandu::Importer::SRU Catmandu::Importer::SRU::Parser::picaxml PICA::Data XML::Simple
+# Some Perl dependencies are downloading files with crazy high user IDs for some reason...
+RUN chown -R root:root /root/.cpanm/work/
 
 # Python dependencies
 RUN apt install -y python3 python3-pip