Enhancement: glances containers metric widget (#4361)

src/widgets/glances/widget.js

@@ -3,7 +3,7 @@ import credentialedProxyHandler from "utils/proxy/handlers/credentialed";
 const widget = {
   api: "{url}/api/{endpoint}",
   proxyHandler: credentialedProxyHandler,
-  allowedEndpoints: /\d\/quicklook|diskio|cpu|fs|gpu|system|mem|network|processlist|sensors/,
+  allowedEndpoints: /\d\/quicklook|diskio|cpu|fs|gpu|system|mem|network|processlist|sensors|containers/,
 };
 
 export default widget;