update install.sh for JLAB

install.sh

 #!/bin/bash
 
-CONTAINER=jug_xl
-VERSION=3.0.1
+CONTAINER="jug_xl"
+VERSION="3.0-stable"
 
 ## Simple setup script that installs the container
 ## in your local environment under $PWD/local/lib
@@ -10,24 +10,58 @@ VERSION=3.0.1
 ## with the $ATHENA_PREFIX variable pointing
 ## to the $PWD/local directory
 
-## get the python installer and run the old-style install
-#cp ../../current/eic_container/install.py .
-wget https://eicweb.phy.anl.gov/containers/eic_container/-/raw/master/install.py
-chmod +x install.py
-./install.py -c $CONTAINER -v $VERSION $PWD/local
-## ensure the container is executable
-chmod +x $PWD/local/lib/${CONTAINER}.sif.${VERSION}
-## Don't place eic-shell in local/bin as this may
-## conflict with things we install inside the container
-rm $PWD/local/bin/eic-shell
-## Cleanup
-rm -rf __pycache__ install.py
+mkdir -p local/lib || exit 1
+
+## check for a singularity install
+if [ $(type -P singularity ) ]; then
+  SINGULARITY=$(which singularity)
+#if [ -z $SINGULARITY ]; then
+else
+  ## jlab singularity
+  if [ -d "/apps/singularity/3.7.1/bin/" ]; then
+    SINGULARITY="/apps/singularity/3.7.1/bin/singularity"
+  ## cvmfs singularity
+  elif [ -f "/cvmfs/oasis.opensciencegrid.org/mis/singularity/bin/singularity" ]; then
+    SINGULARITY="/cvmfs/oasis.opensciencegrid.org/mis/singularity/bin/singularity"
+  else
+    echo "ERROR: no singularity found, please make sure you have singularity in your \$PATH"
+    exit 1
+  fi
+fi
+echo "Found singularity at $SINGULARITY"
+
+SIF=
+## check if we can just use cvmfs for the image
+if [ -f /cvmfs/eic.opensciencegrid.org/singularity/athena/jug_xl_v${VERSION}.sif ]; then
+  ln -sf /cvmfs/eic.opensciencegrid.org/singularity/athena/jug_xl_v${VERSION}.sif local/lib
+  SIF="$PWD/local/lib/jug_xl_v${VERSION}.sif"
+## if not, download the container to the system
+else
+  ## get the python installer and run the old-style install
+  wget https://eicweb.phy.anl.gov/containers/eic_container/-/raw/master/install.py
+  chmod +x install.py
+  ./install.py -c $CONTAINER -v $VERSION $PWD/local
+  ## Don't place eic-shell in local/bin as this may
+  ## conflict with things we install inside the container
+  rm $PWD/local/bin/eic-shell
+  ## Cleanup
+  rm -rf __pycache__ install.py
+  SIF=$PWD/local/lib/${CONTAINER}.sif.${VERSION}
+fi
+
+if [ -z $SIF -o ! -f $SIF ]; then
+  echo "ERROR: no singularity image found"
+else
+  echo "Using ${CONTAINER} image: $SIF"
+fi
 
 ## create a new top-level eic-shell launcher script
 ## that sets the ATHENA_PREFIX and then starts singularity
 cat << EOF > eic-shell
 #!/bin/bash
 export ATHENA_PREFIX=$PWD/local
-$PWD/local/lib/${CONTAINER}.sif.${VERSION}
+$SINGULARITY run $SIF
 EOF
 chmod +x eic-shell
+
+echo "Created custom eic-shell excecutable"