> ## Documentation Index
> Fetch the complete documentation index at: https://nexus.whatsgood.dog/llms.txt
> Use this file to discover all available pages before exploring further.

# Docker

> Learn how to run Nexus as a Docker container

## Introduction

It's possible to run Nexus in a [Docker container](https://hub.docker.com/repository/docker/whatsgood/nexus/general), without needing to write a single line of code. This is possible thanks to the Nexus [environment variables](/key-concepts/environment-variables) that allow you to configure the Nexus instance.

## Setup

<CodeGroup>
  ```yml docker-compose.yml theme={null}
  version: "3.8"

  services:
    nexus:
      image: "whatsgood/nexus:latest"
      container_name: nexus
      ports:
        - "4000:4000"
      environment:
        - 'NEXUS_NODE_PROVIDERS=[{"name": "eth.public", "url":"https://eth.public-rpc.com", "chainId": 1}]'
        - 'NEXUS_CHAINS=[{"name": "mainnet", "chainId": 1, "blockTime": 15}]'
        - 'NEXUS_RELAY_FAILURE=["cycle-requests", 5]'
        - "NEXUS_RELAY_ORDER=random"
        - "NEXUS_LOG_LEVEL=debug"
  ```
</CodeGroup>

## Usage

<Snippet file="send-a-request-no-auth.mdx" />