dotenv usage

.env.example

@@ -1 +1 @@
-BASE_URL=https://www.mydomain.com
+PORT=8080

README.md

@@ -17,5 +17,5 @@ Production
 ```
 yarn install
 yarn build
-node dist/server/server.js
+node -r dotenv/config dist/server/server.js
 ```

src/server/server-dev.ts

@@ -14,6 +14,6 @@ app.use(webpackHotMiddleware(compiler));
 
 server.applyMiddleware({ app });
 
-app.listen(8080, () => {
+app.listen(process.env.PORT || 3000, () => {
     console.log('Server started');
 });

src/server/server.ts

@@ -7,6 +7,6 @@ server.applyMiddleware({ app });
 
 app.use(express.static('dist/web'));
 
-app.listen(8080, () => {
+app.listen(process.env.PORT || 3000, () => {
     console.log('Server started');
 });