Add customizations (#48)

.devcontainer/devcontainer.json

@@ -15,6 +15,10 @@
 		}
 	},
 		
+	// Configure tool-specific properties.
+	"customizations": {
+		// Configure properties specific to VS Code.
+		"vscode": {
 			// Set *default* container specific settings.json values on container create.
 			"settings": { 
 				"terminal.integrated.profiles.linux": {
@@ -41,7 +45,9 @@
 			"extensions": [
 				"ms-python.python",
 				"ms-python.vscode-pylance"
-	],
+			]
+		}
+	},
 
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	// "forwardPorts": [9000],