added builder script

_builder/olddcf.bash

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# Check if BLDR_DIR is set
+if [[ -z "$BLDR_DIR" ]]; then
+  echo "Error: BLDR_DIR is not set. Please ensure it points to a valid directory."
+  exit 1
+fi
+
+# Define the path to the docker-compose.yml file
+compose_file="$BLDR_DIR/docker-compose.yml"
+
+# Check if the docker-compose.yml file exists
+if [[ ! -f "$compose_file" ]]; then
+  echo "Error: No docker-compose.yml file found in $BLDR_DIR"
+  exit 1
+fi
+
+# Read the contents of the docker-compose.yml file into BLDR_OLD_DCF variable
+BLDR_OLD_DCF=$(<"$compose_file")