improve bind_condor functionality for lpc configuration

README.md

@@ -179,10 +179,10 @@ scram-venv
 cmsenv
 pip3 install --upgrade pip
 cmsenv
-pip3 install --upgrade htcondor==10.3.0
+pip3 install htcondor
 ```
-In this particular case, it is necessary to upgrade `pip` and install a specific version of the bindings
-because the Python version in `CMSSW_10_6_X` is old (Python 3.6.4).
+In this particular case, it is necessary to upgrade `pip` because the Python version in `CMSSW_10_6_X` is old (Python 3.6.4).
+`pip` should then automatically install a compatible version of the bindings.
 
 **NOTE**: These recipes only install the bindings for Python3. (Python2 was still the default in `CMSSW_10_6_X`.)
 You will need to make sure any scripts using the bindings are compatible with Python3.

bind_condor.sh

@@ -1,9 +1,17 @@
 #!/bin/bash
 
-if [[ "$(uname -a)" == *cms*.fnal.gov* ]]; then
-	BIND_CONDOR_CONFIG=/etc/condor/config.d/01_cmslpc_interactive
-	BIND_CONDOR_PY=/usr/local/bin/cmslpc-local-conf.py
-	export APPTAINER_BIND=${APPTAINER_BIND}${APPTAINER_BIND:+,}${BIND_CONDOR_CONFIG},${BIND_CONDOR_PY}
+LPC_CONDOR_CONFIG=/etc/condor/config.d/01_cmslpc_interactive
+LPC_CONDOR_LOCAL=/usr/local/bin/cmslpc-local-conf.py
+
+# not all containers have /usr/bin/python3
+COMMAND_NAME=$(basename $0)
+COMMAND_PATH=$(readlink -f "$BASH_SOURCE")
+if [ "$COMMAND_NAME" = "$(basename $LPC_CONDOR_LOCAL)" ]; then
+	python3 ${LPC_CONDOR_LOCAL}.orig | grep -v "LOCAL_CONFIG_FILE"
+	exit $?
+fi
 
+if [[ "$(uname -a)" == *cms*.fnal.gov* ]]; then
+	export APPTAINER_BIND=${APPTAINER_BIND}${APPTAINER_BIND:+,}${LPC_CONDOR_CONFIG},${LPC_CONDOR_LOCAL}:${LPC_CONDOR_LOCAL}.orig,${COMMAND_PATH}:${LPC_CONDOR_LOCAL}
 	export APPTAINERENV_CONDOR_CONFIG=/etc/condor/config.d/01_cmslpc_interactive
 fi