added builder script

_builder/dc-image.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Function to parse and handle the variable
+extract_image_name() {
+    local dirty_img="$1"
+
+    if [[ "$dirty_img" == *\$* ]]; then
+        extracted_value=$(echo "$dirty_img" | sed -n 's/.*:-\([^}]*\)}.*/\1/p')
+    else
+        extracted_value=$dirty_img
+    fi
+
+    echo "$extracted_value"
+}
+