Running autogen.sh seems to break the build when building in docker

cook - libpng build autogen.sh is intended only to generate 'configure' on systems that do not have it. You have a complete 'configure', if you need to change Makefile.am or configure.ac you also need to run configure with the --enable-maintainer-mode option. ./repo.sh failed.mk/filesystem.mk:2: recipe for target 'build/filesystem.bin' failed make: *** [build/filesystem.bin] Error 1