Setup a hardhat node on a container using docker compose

.env

# Set the seed mnemonic phrase
SEED_MNEMONIC_CODE="test test test test test test test test test test test lizard"

# Set the wallet key identifier
HD_WALLET_KEY_IDENTIFIER="m/44'/60'/0'/0"

# Set the amount of default accounts
ACCOUNTS_COUNT=5

docker-compose.yml

services:
  hardhat-node:
    image: node:22-alpine
    working_dir: /hardhat-node
    command: >
      /bin/sh -c 'npm install --save-dev hardhat;
      npx hardhat vars setup;
      npx hardhat node --port 8545'
    ports:
      - "8545:8545"
    volumes:
      - type: bind
        source: ./hardhat.config.js
        target: /hardhat-node/hardhat.config.js
    env_file: 
      - path: ".env"

hardhat.config.js

// Use the .env environmental variables, or use the defaults
const SEED_MNEMONIC_CODE = process.env.SEED_MNEMONIC_CODE ? process.env.SEED_MNEMONIC_CODE : "test test test test test test test test test test test junk";
const HD_WALLET_KEY_IDENTIFIER = process.env.HD_WALLET_KEY_IDENTIFIER ? process.env.HD_WALLET_KEY_IDENTIFIER : "m/44'/60'/0'/0";
const ACCOUNTS_COUNT = process.env.ACCOUNTS_COUNT ? parseInt(process.env.ACCOUNTS_COUNT) : 20;

/** @type import('hardhat/config').HardhatUserConfig */
module.exports = {
  solidity: "0.8.27",
  networks: {
    hardhat: {
      chainId: 31337,
      accounts: {
        mnemonic: SEED_MNEMONIC_CODE,
        path: HD_WALLET_KEY_IDENTIFIER,
        count: ACCOUNTS_COUNT,
      },
    },
  },
};

runnode.sh

#!/bin/zsh
SCRIPT_PATH="${0:a:h}"
echo "Running hardhat node on Docker container."
docker compose -f $SCRIPT_PATH/docker-compose.yml up --detach