Docs & UI update

docs/self-hosting/configuration/envars.mdx

@@ -794,3 +794,9 @@ If export type is set to `otlp`, you will have to configure a value for `OTEL_EX
   The TLS header used to propagate the client certificate from the load balancer
   to the server.
 </ParamField>
+
+## Environment Variable Overrides
+
+If you can't directly access and modify environment variables, you can easily update them using the server admin console.
+
+![Environment Variables Overrides Page](../../images/self-hosting/configuration/overrides/page.png)

frontend/src/pages/admin/EnvironmentPage/components/EnvironmentPageForm.tsx

@@ -214,7 +214,10 @@ export const EnvironmentPageForm = () => {
           <div className="flex items-start gap-1">
             <p className="text-xl font-semibold text-mineshaft-100">Overrides</p>
           </div>
-          <p className="text-sm text-bunker-300">Override specific environment variables.</p>
+          <p className="text-sm text-bunker-300">
+            Override specific environment variables. After saving, it may take up to 5 minutes for
+            variables to propagate throughout every container.
+          </p>
         </div>
 
         <div className="flex flex-row gap-2">