truffle-config.js

const HDWalletProvider = require('@truffle/hdwallet-provider');
require('dotenv').config();

module.exports = {
  networks: {
    development: {
      host: "127.0.0.1",     // Localhost (default: none)
      port: 7545,            // Standard Ethereum port (default: none)
      network_id: "*"       // Any network (default: none)
    },
    goerli: {
      provider: function() {
        return new HDWalletProvider({
          mnemonic: {
            phrase: `${process.env.MNEMONIC}`
          },
          providerOrUrl: `https://goerli.infura.io/v3/${process.env.INFURA_ID}`
        })
      },
      network_id: 5
    }
  },

  // Set default mocha options here, use special reporters, etc.
  mocha: {

  },

  // Configure your compilers
  compilers: {
    solc: {
      version: "0.8.18",      // Fetch exact version from solc-bin (default: truffle's version)
      // docker: true,        // Use "0.5.1" you've installed locally with docker (default: false)
      settings: {          // See the solidity docs for advice about optimization and evmVersion
        optimizer: {
          enabled: false,
          runs: 200
        }
      }
    }
  }

  // Truffle DB is currently disabled by default; to enable it, change enabled:
  // false to enabled: true. The default storage location can also be
  // overridden by specifying the adapter settings, as shown in the commented code below.
  //
  // NOTE: It is not possible to migrate your contracts to truffle DB and you should
  // make a backup of your artifacts to a safe location before enabling this feature.
  //
  // After you backed up your artifacts you can utilize db by running migrate as follows:
  // $ truffle migrate --reset --compile-all
  //
  // db: {
  //   enabled: false,
  //   host: "127.0.0.1",
  //   adapter: {
  //     name: "indexeddb",
  //     settings: {
  //       directory: ".db"
  //     }
  //   }
  // }
};