Merge pull request #227507 from heyams/heya/appsvc-startup-command

Update startup command

Author: v-dirichards

articles/azure-monitor/app/azure-web-apps-java.md

@@ -100,9 +100,17 @@ To manually update, follow these steps:
 
 2. Disable Application Insights via the Application Insights tab in the Azure portal.
 
-3. Once the agent jar file is uploaded, go to App Service configurations and add a new environment variable, `JAVA_OPTS`, with the value `-javaagent:{PATH_TO_THE_AGENT_JAR}/applicationinsights-agent-{VERSION_NUMBER}.jar`.
+3. Once the agent jar file is uploaded, go to App Service configurations. If you
+   need to use **Startup Command** for Linux, please include jvm arguments:
 
-4. Restart the app, leaving the **Startup Command** field blank, to apply the changes.
+   :::image type="content"source="./media/azure-web-apps/startup-command.png" alt-text="Screenshot of startup command.":::
+   
+   **Startup Command** won't honor `JAVA_OPTS`.
+
+   If you don't use **Startup Command**, create a new environment variable, `JAVA_OPTS`, with the value
+   `-javaagent:{PATH_TO_THE_AGENT_JAR}/applicationinsights-agent-{VERSION_NUMBER}.jar`.
+
+4. Restart the app to apply the changes.
 
 > [!NOTE]
 > If you set the JAVA_OPTS environment variable, you will have to disable Application Insights in the portal. Alternatively, if you prefer to enable Application Insights from the portal, make sure that you don't set the `JAVA_OPTS` variable in App Service configurations settings.