add openscad
add openscad

Signed-off-by: Jess Frazelle <e0d1a862d8f31af605ecef8c92857b8938ba622e@jessfraz.com>

koep/dockerfiles,ricardorsierra/dockerfiles,jfrazelle/dockerfiles,koep/dockerfiles,jessfraz/dockerfiles,ricardorsierra/dockerfiles,koep/dockerfiles,michael-k/dockerfiles-jfrazelle,jessfraz/dockerfiles,koep/dockerfiles,jessfraz/dockerfiles,jessfraz/dockerfiles,michael-k/dockerfiles-jfrazelle,ricardorsierra/dockerfiles,jessfraz/dockerfiles,ricardorsierra/dockerfiles,michael-k/dockerfiles-jfrazelle,michael-k/dockerfiles-jfrazelle,michael-k/dockerfiles-jfrazelle,koep/dockerfiles,jfrazelle/dockerfiles,ricardorsierra/dockerfiles