update README

Author: Interpause

README.md

@@ -3,6 +3,7 @@
 Template for ROS2 workspace using [VS Code Dev Containers](https://code.visualstudio.com/docs/remote/containers) & [Docker Compose](https://docs.docker.com/compose/).
 
 - Use `Dev Containers: Clone Repository in Container Volume...` in VS Code's Command Palette to auto-magically setup everything!
+  - To re-open repository, either use `File > Open Recent` or repeat the above with the **exact SAME url**.
 - For customization, do a global find & replace for `(OPTION)`.
   - Remember to `Dev Containers: Rebuild Container` afterwards!
 - GUI apps are viewable via [noVNC](https://novnc.com/info.html) (VNC client web app) hosted on <http://localhost:6080/>.

docker-compose.dev.yml

@@ -1,7 +1,7 @@
 version: '3.9'
 
 volumes:
-  # Store VS Code extensions in named volume to prevent re-downloading.
+  # Store VS Code extensions in named volume to prevent re-downloads.
   # See: https://code.visualstudio.com/remote/advancedcontainers/avoid-extension-reinstalls
   # Also see: https://github.com/microsoft/vscode-remote-release/issues/7690
   vscode-extensions:
@@ -13,7 +13,7 @@ services:
       dockerfile: Dockerfile.dev
 
     volumes:
-      # Store VS Code extensions in named volume to prevent re-downloading.
+      # Store VS Code extensions in named volume to prevent re-downloads.
       - vscode-extensions:/root/.vscode-server
       # Allow access to Docker daemon for VS Code Docker extension to work inside container.
       - /var/run/docker.sock:/var/run/docker.sock