Error with ports: vue.js+node.js project in heroku - node.js

Question

Trying to deploy my fullstack project. Locally it builds and working well, but in Heroku, after 'git push heroku master' command and automatic build after it I get the application error - 503 Service Unavailable. It looks like there are different ports or maybe incorrect path to the root folder, where it is index.html
My vue.js config/index.js
'use strict'
const path = require('path')
module.exports = {
dev: {
assetsSubDirectory: 'static',
assetsPublicPath: '/',
proxyTable: {},
port: 80,
autoOpenBrowser: false,
errorOverlay: true,
notifyOnErrors: true,
poll: false,
useEslint: true,
showEslintErrorsInOverlay: false,
devtool: 'cheap-module-eval-source-map',
cacheBusting: true,
cssSourceMap: true
},
build: {
index: path.resolve(__dirname, '../dist/index.html'),
assetsRoot: path.resolve(__dirname, '../dist'),
assetsSubDirectory: 'static',
assetsPublicPath: '/',
productionSourceMap: true,
devtool: '#source-map',
productionGzip: false,
productionGzipExtensions: ['js', 'css'],
bundleAnalyzerReport: process.env.npm_config_report
}
}
My package.json
...
"scripts": {
"dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
"postinstall": "nodemon app.js",
"start": "npm run build",
"unit": "cross-env BABEL_ENV=test karma start test/unit/karma.conf.js --single-run",
"e2e": "node test/e2e/runner.js",
"test": "npm run unit && npm run e2e",
"lint": "eslint --ext .js,.vue src test/unit/specs test/e2e/specs",
"build": "node --optimize_for_size --max_old_space_size=2048 --gc_interval=100 build/build.js"
},
...
And the app.js, where I've defined 'dist' as a folder, where app should get main index.html - 'app.use(express.static('dist'))'
const express = require('express');
const path = require('path');
const favicon = require('serve-favicon');
const morgan = require('morgan');
const bodyParser = require('body-parser');
const book = require('./api/routes/book');
const doingsRoutes = require('./api/routes/doings');
const targetsRoutes = require('./api/routes/targets');
const topsRoutes = require('./api/routes/tops');
const usersRoutes = require('./api/routes/users');
const app = express();
const mongoose = require('mongoose');
mongoose.Promise = require('bluebird');
mongoose.connect(
'mongodb://nodejs-rest:' +
'nodejs-rest' +
'#nodejs-rest-shard-00-00-vwe6k.mongodb.net:27017,nodejs-rest-shard-00-01-vwe6k.mongodb.net:27017,nodejs-rest-shard-00-02-vwe6k.mongodb.net:27017/test?ssl=true&replicaSet=nodejs-rest-shard-0&authSource=admin',
{
promiseLibrary: require('bluebird')
}
);
app.use(morgan('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({'extended':'false'}));
app.use('/api/doings', doingsRoutes);
app.use('/api/targets', targetsRoutes);
app.use('/api/tops', topsRoutes);
app.use('/api/users', usersRoutes);
app.use(function(req, res, next) {
const err = new Error('Not Found');
err.status = 404;
next(err);
});
app.set("port", process.env.PORT || 80);
if (process.env.NODE_ENV === 'production') {
console.log('dist')
app.use(express.static('dist'));
}
app.listen(app.get("port"), () => {
console.log(`Find the server at: ${app.get("port")}`);
});
app.use(function(err, req, res, next) {
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
res.status(err.status || 500);
res.sendFile(path.join(__dirname, '../dist', 'index.html'));
});
app.set('view engine', 'html');

Answer 1

You need to add a server.js file with express and the entry route on the root foolder of you app (in the same folder where package.json/index.html is located) . I have a vue app on heroku as well, it's not very hard.
// server.js
const express = require('express')
const path = require('path')
const history = require('connect-history-api-fallback')
const app = express()
const staticFileMiddleware = express.static(path.join(__dirname + '/dist'))
app.use(staticFileMiddleware)
app.use(history({
disableDotRule: true,
verbose: true
}))
app.use(staticFileMiddleware)
app.get('/', function (req, res) {
res.render(path.join(__dirname + '/dist/index.html'))
})
var server = app.listen(process.env.PORT || 8080, function () {
var port = server.address().port
console.log('App now running on port', port)
})