Template for web development
(1) yarn package manager installs all dependencies (2) webpack combines all js into build/js/app.js, copies index.html and inserts app.js in there (3) webpack starts devserver that serves content from build (4) docker built based on node docker. all source files copied into /usr/src in docker. (5) invokes yarn build and yarn start commands to start server on port 8080 that is forwarded to external ip.