system_requirements.txt

sudo apt-get update && apt-get upgrade -y

sudo apt-get install -y curl wget libpq-dev python3-dev gem ruby ruby-dev build-essential libssl-dev libffi-dev python-dev python-virtualenv python-pip git redis-server libtiff5-dev libjpeg8-dev zlib1g-dev libfreetype6-dev liblcms2-dev libwebp-dev libharfbuzz-dev libfribidi-dev tcl8.6-dev tk8.6-dev python-tk

sudo gem install sass

sudo apt-get install wkhtmltopdf