Add base kubernetes support 5

frontend/substitute-env.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+set -e
+
+# Handle VITE_API_URL specially to preserve empty values
+# If VITE_API_URL is unset, use default; if empty, preserve empty; otherwise use value
+if [ -z "${VITE_API_URL+x}" ]; then
+  export VITE_API_URL="/api"
+elif [ -z "$VITE_API_URL" ]; then
+  # If VITE_API_URL is explicitly set to empty string, use relative API path
+  export VITE_API_URL="/api"
+fi
+
+# Default values for other environment variables
+export VITE_APP_TITLE=${VITE_APP_TITLE:-"PanIA Dashboard"}
+export VITE_APP_VERSION=${VITE_APP_VERSION:-"1.0.0"}
+
+# Create a runtime configuration file that can be loaded by the frontend
+cat > /usr/share/nginx/html/runtime-config.js << EOL
+window.__RUNTIME_CONFIG__ = {
+  VITE_API_URL: '${VITE_API_URL}',
+  VITE_APP_TITLE: '${VITE_APP_TITLE}',
+  VITE_APP_VERSION: '${VITE_APP_VERSION}'
+};
+EOL
+
+echo "Runtime configuration created with API URL: ${VITE_API_URL}"