If someone is looking for a solution, here’s how I did with bash script :
# get plugin path
acf_zip_file=”$(wp plugin path)/acf-pro.zip”
# get acf zip file
wget -O ${acf_zip_file} “http://connect.advancedcustomfields.com/index.php?p=pro&a=download&k=<YOUR_KEY>”
# install & activate acf
wp plugin install ${acf_zip_file} –activate
# remove zip file
rm ${acf_zip_file}