entrypoint updated to handle already set config file

Signed-off-by: Mohammed Ismail <mohammed.ismail@openairinterface.org>

scripts/entrypoint.sh

@@ -17,6 +17,10 @@ fi
 
 for c in ${CONFIG_DIR}/*.conf; do
     # grep variable names (format: ${VAR}) from template to be rendered
+    if ! grep -oP '@[a-zA-Z0-9_]+@' ${c}; then
+        echo "Configuration is already set"
+        exec "$@"
+    fi
     VARS=$(grep -oP '@[a-zA-Z0-9_]+@' ${c} | sort | uniq | xargs)
 
     # create sed expressions for substituting each occurrence of ${VAR}