Updates .env template

.env

@@ -2,11 +2,24 @@
 # Be sure to uncomment any line you populate
 # Everything is optional, but some features won't work without external API access
 
-# GOOGLE_CLOUD_API_KEY=''
-# SHODAN_API_KEY=''
-# REACT_APP_SHODAN_API_KEY=''
-# WHO_API_KEY=''
-# REACT_APP_WHO_API_KEY=''
-# SECURITY_TRAILS_API_KEY=''
-# BUILT_WITH_API_KEY=''
-# CI=false
+# API Keys for external services (backend)
+GOOGLE_CLOUD_API_KEY=''
+TORRENT_IP_API_KEY=''
+SECURITY_TRAILS_API_KEY=''
+BUILT_WITH_API_KEY=''
+URL_SCAN_API_KEY=''
+TRANCO_USERNAME=''
+TRANCO_API_KEY=''
+CLOUDMERSIVE_API_KEY=''
+
+# API Keys for external services (frontend)
+REACT_APP_SHODAN_API_KEY=''
+REACT_APP_WHO_API_KEY=''
+
+# Configuration settings
+# CHROME_PATH='/usr/bin/chromium' # The path the the Chromium executable
+# PORT='3000' # Port to serve the API, when running server.js
+# DISABLE_GUI='false' # Disable the GUI, and only serve the API
+# API_TIMEOUT_LIMIT='10000' # The timeout limit for API requests, in milliseconds
+# API_CORS_ORIGIN='*' # Enable CORS, by setting your allowed hostname(s) here
+# REACT_APP_API_ENDPOINT='/api' # The endpoint for the API (can be local or remote)