feat: add demo devcontainer

.devcontainer/demo/devcontainer.json

@@ -0,0 +1,35 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/universal
+{
+	"name": "LangChain Demo Container",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "mcr.microsoft.com/devcontainers/python:3.10",
+	"features": {
+		"ghcr.io/devcontainers/features/aws-cli:1": {},
+		"ghcr.io/devcontainers/features/docker-in-docker": {},
+		"ghcr.io/devcontainers/features/node": {}
+	},
+	"customizations": {
+		"vscode": {"extensions": [
+				"actboy168.tasks",
+				"GitHub.copilot",
+				"ms-python.python",
+				"eamodio.gitlens"
+			]}
+	},
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// 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": "pipx install 'langflow>=0.0.33' && langflow --host 0.0.0.0",
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}