add .devcontainer/devcontainer.json

.devcontainer/devcontainer.json

@@ -0,0 +1,21 @@
+{
+	"name": "Node.js",
+	"image": "node:20-alpine",
+
+	"customizations": {
+		"vscode": {
+			"settings": {},
+			"extensions": [
+				"streetsidesoftware.code-spell-checker"
+			]
+		}
+	},
+
+	"portsAttributes": {
+		"3000": {
+			"label": "Hello Remote World",
+			"onAutoForward": "notify"
+		}
+	},
+	"postAttachCommand": "npm run docs:dev"
+}