Fully-automate dev setup with Gitpod

Co-Authored-By: Jan Keromnes <[email protected]>

Author: akosyakov

.gitpod.yml

@@ -0,0 +1,7 @@
+ports:
+  - port: 8000
+    onOpen: open-preview
+
+tasks:
+  - init: composer update
+    command: php -S 0.0.0.0:8000 -t public/

README.md

@@ -1,6 +1,8 @@
 Symfony Demo Application
 ========================
 
+[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/gitpod-io/symfony-demo)
+
 The "Symfony Demo Application" is a reference application created to show how
 to develop applications following the [Symfony Best Practices][1].