Create startup.sh

startup.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+
+# This script is run when the container starts.
+# It injects the API_KEY (expected to be an environment variable at runtime)
+# into a JavaScript file, then starts Nginx.
+
+CONFIG_JS_PATH="/usr/share/nginx/html/config.js"
+
+echo "Startup script running..."
+echo "Attempting to write API key to $CONFIG_JS_PATH"
+
+if [ -z "$API_KEY" ]; then
+  echo "WARNING: API_KEY environment variable is not set or is empty at runtime!" >&2
+  # Create a config that indicates the key is missing, so the frontend can handle it gracefully.
+  echo "window.MY_API_KEY = null; console.error('RUNTIME WARNING: API Key was not found in the environment when the container started.');" > "$CONFIG_JS_PATH"
+  echo "Wrote null API Key to $CONFIG_JS_PATH"
+else
+  # Escape single quotes in API_KEY to prevent breaking the JS string.
+  # sed "s/'/'\\\\''/g" replaces ' with '\''
+  ESCAPED_API_KEY=$(echo "$API_KEY" | sed "s/'/'\\\\''/g")
+  echo "window.MY_API_KEY = '${ESCAPED_API_KEY}';" > "$CONFIG_JS_PATH"
+  echo "API Key successfully written to $CONFIG_JS_PATH"
+fi
+
+echo "Starting Nginx..."
+# Start Nginx in the foreground, so the container keeps running.
+nginx -g 'daemon off;'