if docker compose up is ran before configure.sh, it will create a dir…

…ectory called user.config.json since docker is trying to mount that as a volume but it doesn't exist yet since configure.sh is what creates it. this would then block configure.sh from creating it by default, so it now checks if user.config.json is an empty directory and deletes it if so. (#143)

configure.sh

@@ -26,6 +26,13 @@ USER_CONFIG_JSON_DESTINATION=${SCRIPT_DIR}/simulation/isaac-sim/docker/user.conf
 
 echo -e "${BOLDCYAN}1. Generating Default IsaacSim Config ($USER_CONFIG_JSON_DESTINATION)${ENDCOLOR}"
 
+if [ -d $USER_CONFIG_JSON_DESTINATION ] && [ $(ls -A $USER_CONFIG_JSON_DESTINATION | wc -l) == 0 ]; then
+    # delete an empty directory with the same name as $USER_CONFIG_JSON_DESTINATION which gets created when
+    # docker compose up is run before this script. Doing this will create a directory name user.config.json because
+    # it is being mounted as a volume but it doesn't exist yet.
+    rm -rf $USER_CONFIG_JSON_DESTINATION
+fi
+
 if [ -f $USER_CONFIG_JSON_DESTINATION ]; then
     echo -e "${YELLOW}WARNING: The file $USER_CONFIG_JSON_DESTINATION already exists.${ENDCOLOR}"
     confirm_no "Do you want to reset it to the default? [y/N]" && cp $USER_CONFIG_JSON_SOURCE $USER_CONFIG_JSON_DESTINATION