remove lmod from container as it gives some weird issues

containers/release/Dockerfile.in

@@ -32,6 +32,7 @@ RUN apt-get -yqq update \
  && apt-get -yqq install --no-install-recommends \
         ghostscript \
         gv \
+ && apt-get -yqq purge lmod \
  && rm -rf /var/lib/apt/lists/*
 
 ## Copy over files from builder