Compile PhantomJS on Centos/Red Hat. This can be compiled on AWS T2.Medium instance before you run out of the default credits. I've picked a specific commit to build from but you can delete that line and build from master if you like.

phantomjs_compile.sh

sudo yum -y update 
sudo yum -y install "Development tools"
sudo yum -y install gcc gcc-c++ make flex bison gperf ruby openssl-devel freetype-devel fontconfig-devel libicu-devel sqlite-devel libpng-devel libjpeg-devel git

cd ~
git clone https://github.com/ariya/phantomjs.git
cd phantomjs
git checkout 05d7e3e77d78904d504bd20e61c2bb3c41cd8a0d
chmod 777 build.sh
./build.sh --confirm

echo "Here is your compiled version of phantomjs"
ls -la bin