Add installation and environment for fluka

Dockerfile

@@ -321,6 +321,8 @@ RUN mkdir -p /usr/local/root &&\
 COPY ./certs/ /usr/local/share/ca-certificates
 RUN update-ca-certificates
 
+COPY fluka_4-3.1.x86-Linux-gfor7_amd64.deb /
+RUN apt-get install /fluka_4-3.1.x86-Linux-gfor7_amd64.deb
 #run environment setup when docker container is launched and decide what to do from there
 #   will require the environment variable LDMX_BASE defined
 COPY ./entry.sh /etc/

entry.sh

@@ -51,12 +51,32 @@ do
 done
 unset _external_path
 
+
 # helps simplify any cmake nonsense
 export CMAKE_PREFIX_PATH=/usr/local/:$LDMX_SW_INSTALL
 
 # puts a config/cache directory for matplotlib to use
 export MPLCONFIGDIR=$LDMX_BASE/.config/matplotlib
 
+# FLUKA Environment
+# From env_FLUKA.sh
+export PATH=$PATH:/usr/local/fluka/bin
+export FLUKA_PATH=$(realpath $(dirname $(which fluka))/..)
+if [ ! -d "$FLUKA_PATH" ]; then
+   echo "!!! fluka not found. FLUKA_REPO=$FLUKA_PATH. Add your fluka_repo/bin to the PATH. !!!";
+fi
+
+export FLUKADATA=$FLUKA_PATH/data
+if [ ! -d "$FLUKADATA" ]; then
+   echo "!!! fluka data repo not found. FLUKADATA=$FLUKADATA. Add your fluka_repo/bin to the PATH. !!!";
+fi
+
+export FLUKA_LIB_DIR=$FLUKA_PATH/lib
+if [ ! -d "$FLUKA_LIB_DIR" ]; then
+   echo "!!! fluka lib repo not found. FLUKA_LIB_DIR=$FLUKA_LIB_DIR. Add your fluka_repo/bin to the PATH. !!!";
+fi
+
+export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$FLUKA_LIB_DIR
 # go to first argument
 cd "$1"