Update dev container

Dev container: Install dev environment

.devcontainer/devcontainer.json

@@ -36,12 +36,5 @@
 		"ms-python.python"
 	],
 
-	// Use 'forwardPorts' to make a list of ports inside the container available locally.
-	// "forwardPorts": [],
-
-	// Use 'postCreateCommand' to run commands after the container is created.
-	// "postCreateCommand": "pip3 install --user -r requirements.txt",
-
-	// Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
-	"remoteUser": "vscode"
+	"postCreateCommand": "pip3 install --user -e .",
 }