diff --git a/base/omgsim:4.10.01 b/base/omgsim:4.10.01
index ecbba4fce6230dab7a21afe511d2d20afa501aa0..a3115fbe9150e081f8d0ff67a3c07cb1e84e73d4 100644
--- a/base/omgsim:4.10.01
+++ b/base/omgsim:4.10.01
@@ -14,11 +14,11 @@ FROM docker.km3net.de/base/centos-full:7
  RUN mkdir $HOME/OMGsim
 
 # Make libconfig
- RUN cd $HOME/OMGsim && wget https://hyperrealm.github.io/libconfig/dist/libconfig-1.7.2.tar.gz && tar xf libconfig-1.7.2.tar.gz -C /tmp && rm libconfig-1.7.2.tar.gz
- RUN export LIBCONFIG_ROOT=`pwd`/libconfig-1.7.2 && cd /tmp/libconfig-1.7.2/ && ./configure --prefix $LIBCONFIG_ROOT && make && make install && cd -
- RUN rm -rf /tmp/libconfig-1.7.2/
- RUN export LD_LIBRARY_PATH=${LIBCONFIG_ROOT}/lib:${LD_LIBRARY_PATH}
- RUN export CPLUS_INCLUDE_PATH=${LIBCONFIG_ROOT}/include
+ RUN cd $HOME/OMGsim && wget https://hyperrealm.github.io/libconfig/dist/libconfig-1.7.2.tar.gz && tar xf libconfig-1.7.2.tar.gz -C /tmp && rm libconfig-1.7.2.tar.gz && \
+    export LIBCONFIG_ROOT=`pwd`/libconfig-1.7.2 && cd /tmp/libconfig-1.7.2/ && ./configure --prefix $LIBCONFIG_ROOT && make && make install && cd - && \
+    rm -rf /tmp/libconfig-1.7.2/ && \
+    export LD_LIBRARY_PATH=${LIBCONFIG_ROOT}/lib:${LD_LIBRARY_PATH} && \
+    export CPLUS_INCLUDE_PATH=${LIBCONFIG_ROOT}/include && \
 
 # Make Geant4 and dependencies
  RUN yum install -y libX11-devel libXmu-devel motif motif-devel