github.com/iron-io/functions@v0.0.0-20180820112432-d59d7d1c40b2/examples/image_processing/inplace/func.rb (about)

     1  require 'mini_magick'
     2  
     3  payload = STDIN.read.strip
     4  image = MiniMagick::Image.open(payload)
     5  image.contrast
     6  image.resize "250x200"
     7  image.rotate "-90"
     8  image.write STDOUT