deploy.js

require('dotenv').config();
const endpoint = process.env.ENDPOINT_URL;
const address = process.env.PUBLIC_KEY;
const privKey = process.env.PRIVATE_KEY;
var Web3 = require('web3');
var web3 = new Web3(Web3.givenProvider || endpoint);
var fs = require('fs');
var contractABI = JSON.parse(fs.readFileSync('./PCHNFT_sol_PlaceholderHeroes.abi', 'utf8'));
var contractBIN = fs.readFileSync('./PCHNFT_sol_PlaceholderHeroes.bin', 'utf8');

//Create asynchronous deploy function
const deploy = async() => {
    console.log('Attempting to deploy contract from: ', address);
    //Create new contract object
    const contractNFT = new web3.eth.Contract(contractABI, address);
    //Deploy contract object as a transaction
    const contractTX = contractNFT.deploy({
        //Set transaction data as the contract bytecode
        data: contractBIN,
    });
    //Sign the transaction
    const createTransaction = await web3.eth.accounts.signTransaction({
            //Define transaction parameters
            from: address,
            data: contractTX.encodeABI(),
            gas: '2968862',
        },
        privKey
    );
    //Return transaction receipt
    const createReceipt = await web3.eth.sendSignedTransaction(
        createTransaction.rawTransaction
    );
    //Log contract address from receipt
    console.log('Contract successfully deployed at: ', createReceipt.contractAddress);
};

//Don’t forget to run the function!
deploy();