Binding web address

Ability to change whether app binds to 0.0.0.0 or other address (127.0.0.1, for proxying).

src/config.js

@@ -4,6 +4,7 @@ const { release } = require('./package.json');
 
 module.exports.RELEASE = release;
 module.exports.PORT = process.env.PORT || 51821;
+module.exports.WEBHOST = process.env.WEBHOST || '0.0.0.0';
 module.exports.PASSWORD = process.env.PASSWORD;
 module.exports.WG_PATH = process.env.WG_PATH || '/etc/wireguard/';
 module.exports.WG_HOST = process.env.WG_HOST;