Merge pull request #22357 from github/codespaces-devcontainer-update

Add instructions on updating devcontainer features

Author: saritai

assets/images/help/codespaces/codespaces-configure-features.png

@@ -106,6 +106,15 @@ You can add some of the most common features by selecting them when configuring
 
 ![The select additional features menu during container configuration.](/assets/images/help/codespaces/select-additional-features.png)
 
+You can also add or remove features outside of the **Add Development Container Configuration Files** workflow. 
+1. Access the Command Palette (`Shift + Command + P` / `Ctrl + Shift + P`), then start typing "configure". Select **Codespaces: Configure Devcontainer Features**.
+  ![The Configure Devcontainer Features command in the command palette](/assets/images/help/codespaces/codespaces-configure-features.png)
+2. Update your feature selections, then click **OK**.
+  ![The select additional features menu during container configuration.](/assets/images/help/codespaces/select-additional-features.png)
+1. To apply the changes, in the bottom right corner of the screen, click **Rebuild now**. For more information about rebuilding your container, see "[Applying changes to your configuration](#applying-changes-to-your-configuration)."
+  !["Codespaces: Rebuild Container" in the command palette](/assets/images/help/codespaces/rebuild-prompt.png)
+
+
 ## Creating a custom codespace configuration
 
 If none of the predefined configurations meet your needs, you can create a custom configuration by adding a `devcontainer.json` file. {% data reusables.codespaces.devcontainer-location %}