---
title: Develop locally with Containers and the Cloudflare Vite plugin
description: The Cloudflare Vite plugin now supports configuring Containers in your Worker
image: https://developers.cloudflare.com/changelog-preview.png
---

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## Develop locally with Containers and the Cloudflare Vite plugin

Aug 01, 2025 

[ Workers ](https://developers.cloudflare.com/workers/) 

You can now configure and run [Containers](https://developers.cloudflare.com/containers) alongside your [Worker](https://developers.cloudflare.com/workers) during local development when using the [Cloudflare Vite plugin](https://developers.cloudflare.com/workers/vite-plugin/). Previously, you could only develop locally when using [Wrangler](https://developers.cloudflare.com/workers/wrangler/) as your local development server.

#### Configuration

You can simply configure your Worker and your Container(s) in your Wrangler configuration file:

* [  wrangler.jsonc ](#tab-panel-2735)
* [  wrangler.toml ](#tab-panel-2736)

JSONC

```
{  "name": "container-starter",  "main": "src/index.js",  "containers": [    {      "class_name": "MyContainer",      "image": "./Dockerfile",      "instances": 5    }  ],  "durable_objects": {    "bindings": [      {        "class_name": "MyContainer",        "name": "MY_CONTAINER"      }    ]  },  "migrations": [    {      "new_sqlite_classes": [        "MyContainer"      ],      "tag": "v1"    }  ],}
```

TOML

```
name = "container-starter"main = "src/index.js"
[[containers]]class_name = "MyContainer"image = "./Dockerfile"instances = 5
[[durable_objects.bindings]]class_name = "MyContainer"name = "MY_CONTAINER"
[[migrations]]new_sqlite_classes = [ "MyContainer" ]tag = "v1"
```

#### Worker Code

Once your Worker and Containers are configured, you can access the Container instances from your Worker code:

TypeScript

```
import { Container, getContainer } from "@cloudflare/containers";
export class MyContainer extends Container {  defaultPort = 4000; // Port the container is listening on  sleepAfter = "10m"; // Stop the instance if requests not sent for 10 minutes}
async fetch(request, env) {  const { "session-id": sessionId } = await request.json();  // Get the container instance for the given session ID  const containerInstance = getContainer(env.MY_CONTAINER, sessionId)  // Pass the request to the container instance on its default port  return containerInstance.fetch(request);}
```

#### Local development

To develop your Worker locally, start a local dev server by running

Terminal window

```
vite dev
```

in your terminal.

#### Resources

Learn more about [Cloudflare Containers ↗](https://developers.cloudflare.com/containers/) or the [Cloudflare Vite plugin ↗](https://developers.cloudflare.com/workers/vite-plugin/) in our developer docs.

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