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Docker Container for Bidder Node

The MEV-Commit Bidder setup leverages Docker to deploy a bidder node service within a single container, the repository can be found here . This bidder node connects to the mev-commit chain, enabling users to submit bids seamlessly. By containerizing the service, you ensure a consistent and reproducible environment, simplifying deployment and scaling.

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Prerequisites

Before you begin, ensure you have the following:
  • Docker: Install Docker on your machine. You can download it from the official Docker website.
  • Docker Compose: Ensure Docker Compose is installed. It typically comes bundled with Docker Desktop, but you can verify by running docker-compose —version.
  • Afunded MEV-Commit address.
  • A valid Holesky private key for authentication. If you need funds, use the MEV-Commit faucet.

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Setup Instructions

Follow these steps to set up and run your MEV-Commit bidder node.
  1. Clone the Repository Begin by cloning the repository to your local machine:
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git clone https://github.com/your-repo/mev-commit-bidder-docker.git
cd mev-commit-bidder-docker
  1. Configure Environment Variables Create a .env file in the root directory of the repository to store your environment variables securely.
Create the .env file: 
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touch .env
Define the required variables: Open the .env file in your preferred text editor and add the following: 
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PRIVATE_KEY_BIDDER=your_private_key_here
DOMAIN=testnet.mev-commit.xyz
Replace your_private_key_here with your actual private key. The DOMAIN variable defaults to testnet.mev-commit.xyz, but you can modify it if needed.
  1. Build and Run Docker Containers With the environment configured, proceed to build and run the Docker containers.
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docker-compose up --build
This command performs the following actions:
  • Builds the Docker image based on Ubuntu 20.04.
  • Installs necessary dependencies such as curl and jq.
  • Downloads and installs the latest MEV-Commit binary from the official repository.
  • Starts the bidder node service within the container.

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Customization

Tailor the bidder node to fit your specific needs by adjusting environment variables or modifying the startup script.

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Modifying the Entry Point

The container uses an entrypoint.sh script to initiate the bidder service. If you need to alter the startup sequence: Edit the entrypoint.sh script: Locate and open the entrypoint.sh file in the repository. Make your desired changes to customize the startup behavior. Rebuild the Docker Image: After modifying the script, rebuild the Docker image to apply the changes: 
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docker-compose up --build

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Networking with Other Repositories

Before deploying your containers, create a shared Docker network: 
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docker network create app-network
This network, named app-network, facilitates communication between the bidder node and other services.

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Using the Network with Other Containers

To enable other Docker services to communicate with the MEV-Commit bidder node, ensure they reference the same app-network. Here’s how to configure another repository’s docker-compose.yml to join the network: 
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version: '3'
services:
  bid-sender:
    image: your-bid-sender-image
    networks:
      - app-network
    environment:
      - RPC_ENDPOINT=http://mev-commit-bidder:13524

networks:
  app-network:
    external: true