Fixed the missing caching on gui/meta.json bug.

gui/src/components/App.js

@@ -201,8 +201,14 @@ class NavigationUnstyled extends React.Component {
   }
 
   componentDidMount() {
-    fetch(`${guiBase}/meta.json`)
-      .then((response) => response.json())
+    fetch(`${guiBase}/meta.json`, {
+      method: 'GET',
+      cache: 'no-cache',
+      headers: {
+        'Pragma': 'no-cache',
+        'Cache-Control': 'no-cache, no-store'
+      }
+    }).then((response) => response.json())
       .then((meta) => {
         if (meta.version !== packageJson.version) {
           console.log('GUI API version mismatch')

ops/helm/nomad/templates/gui-deployment.yml

@@ -39,6 +39,16 @@ data:
         rewrite ^{{ .Values.proxy.external.path }}/gui/service-worker.js /nomad/service-worker.js break;
       }
 
+      location {{ .Values.proxy.external.path }}/gui/meta.json {
+        add_header Last-Modified $date_gmt;
+        add_header Cache-Control 'no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0';
+        if_modified_since off;
+        expires off;
+        etag off;
+        root      /app/;
+        rewrite ^{{ .Values.proxy.external.path }}/gui/meta.json /nomad/meta.json break;
+      }
+
       location {{ .Values.proxy.external.path }}/api/uploads {
         client_max_body_size 35g;
         proxy_request_buffering off;