Add instructions

README.md

@@ -6,4 +6,20 @@ Available features can be found [here](https://containers.dev/features).
 
 ## GitHub Actions
 
-Actions workflows need read and write permissions to push images to ghcr.io. Go to repository settings > Actions > General > Workflow permissions > select **Read and write permissions**.  
+Actions workflows need read and write permissions to push images to ghcr.io. Go to repository settings > Actions > General > Workflow permissions > select **Read and write permissions**.  
+
+## Local Dev Container configurations
+
+You can use local dev container configurations, so that they don't need to be pushed into shared repositories. The configurations are stored in the path: ~/.config/Code/User/globalStorage/ms-vscode-remote.remote-containers/configs/<name-of-the-directory>/.devcontainer/devcontainer.json
+
+Here is a basic configuration file:
+
+```json
+{
+	"name": "work tools - Local Configuration",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "ghcr.io/tuomastielinen/dev-container-work-tools/devcontainer"
+}
+```
+
+To open a folder in a dev container, open the command palette and select: **Dev Containers: Open Folder in Container...**. Then select the desired configuration file.