Update configuring_environment.md

Author: Aurang

guides/configuring_environment.md

@@ -31,3 +31,32 @@ ___
 ### Changing the default vscode settings that get applied each time the container is rebuilt
 You can simply edit deploy-container/settings.json to your vscode settings. When the container gets rebuilt, they will be copied to the appropriate place and be applied in code-server.<br>
 > NOTE: These settings are applied User-wide
+___
+### directory '/home/coder/.config/rclone' does not exist
+If you are getting this error, you can add this command to your Dockerfile
+```Dockerfile
+# Create rclone config directory
+RUN mkdir /home/coder/.config/rclone
+```
+If you are getting "directory '/home/coder/.config' does not exist", see above for how to create the .config directory or add the -p flag to create any non-existant parent directories as well
+___
+### Installing extensions
+> NOTE: not all extensions maybe available in code-server, see [[1]](https://github.com/cdr/code-server/blob/main/docs/FAQ.md#differences-compared-to-vs-code), [[2]](https://github.com/cdr/code-server/blob/main/docs/FAQ.md#how-can-i-request-a-missing-extension), [[3]](https://github.com/cdr/code-server/blob/main/docs/FAQ.md#how-do-i-configure-the-marketplace-url), and [[4]](https://github.com/cdr/code-server/blob/main/docs/FAQ.md#where-are-extensions-stored) for more info
+
+There are several ways to install extensions
+1. Installing directly in code-server
+You can install extensions directly from inside code-server using the GUI. The button should be in the activity bar on the left and looks like this
+![Extensions Button](img/vscode-activity-bar-extension-button.png)<br>
+You can also use Ctrl+Shift+X to bring it up
+> NOTE: Extensions installed using this method will not persist between container rebuilds
+
+2. Installing using vscode integrated terminal
+You can install extensions by using the built-in terminal in code-server. Use Ctrl+J to bring up the panel and select the terminal tab. Or you can use Ctrl+\`
+The command for installing extensions is:
+```shell
+code-server --install-extension ms-python.python
+# or to install multiple
+code-server --install-extension ms-python.python --install-extension redhat.vscode-yaml
+```
+> NOTE: Extensions installed using this method will not persist between container rebuilds
+