add howto clone and start the devcontainer and how to start express inside.

doc/README.md

@@ -1,4 +1,32 @@
-# Start the Server:
-'''npm run devStart'''
+# Clone the Repository into a container
 
-![alt text](./assets/image.png)
+Open VS Code and press ```Ctrl + Shift + P``` (Windows/Linux) or ```Cmd + Shift + P``` (Mac) to get to the Command Palette
+
+Type ```DevContainers Clone...``` until you can see the command:
+DevContainers: Clone Repository in Container Volume...
+![alt text](./assets/command_palllete.png)
+
+Enter the URL of the repository:
+
+https://gitea.not-my.cloud/dieter/test_dev.git
+
+![alt text](./assets/repo_url.png)
+
+The repo should be cloned and the container starts up:
+
+![alt text](./assets/devcontainer_start.png)
+
+Now you are able to open a new terminal:
+
+![alt text](./assets/new_terminal.png)
+
+# Start the Server:
+```npm run devStart``` or ```npx nodemon```
+
+![alt text](./assets/start_node_server.png)
+
+or
+
+![alt text](./assets/start_node_server2.png)
+
+the second method uses the [nodemon.json](../nodemon.json) to configure nodemon.