Example of app.yml for Laravel5.x + Elixir on Google App Engine

app.yml

application: yourApp
version: one
runtime: php55
api_version: 1

handlers:
 - url: /favicon\.ico
   static_files: public/favicon.ico
   upload: public/favicon\.ico

 - url: /assets/(.*\.(htm$|html$|css$|js$|png$))
   static_files: public/assets/\1
   upload: public/assets/(.*\.(htm$|html$|css$|js$|png$))
   application_readable: true
# For Elixir build assets
 - url: /build/assets/(.*\.(htm$|html$|css$|js$|png$))
   static_files: public/build/assets/\1
   upload: public/build/assets/(.*\.(htm$|html$|css$|js$|png$))
   application_readable: true

 - url: /.*
   script: public/index.php