added builder script

_builder/dc-env.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+process_env_vars() {
+    local env_vars="$1"  # Accept the environment variables as the first parameter
+    local APP_NAME="$(echo "$2" | tr '[:lower:]' '[:upper:]')"  # Convert app name to uppercase
+    local results=()     # Array to collect results
+
+    # Loop through each environment variable
+    while IFS= read -r env_var; do
+        # Split into name and value parts based on '='
+        var_name="${env_var%%=*}"  # Variable name
+        var_value="${env_var#*=}"  # Variable value
+
+        # Handle variables with and without default values
+        if [[ "$var_value" == *'${'*:*'}'* ]]; then
+            # For variables with default values
+            modified_var="${var_name}=\${${APP_NAME}_${var_value#\$\{}"
+        else
+            # For variables without default values
+            modified_var="${var_name}=\${${APP_NAME}_${var_name}:-${var_value}}"
+        fi
+
+        # Append the modified variable to results
+        results+=("$modified_var")
+    done <<< "$env_vars"
+
+    # Output the results joined with new lines
+    printf "%s\n" "${results[@]}" | sort
+}