this is to add more info to this, installation process on raspberry pi 3B

[yairvillarpt]

first setup up all the LOCALE info with raspberry-config.
then you have to install python3 and pip3
sudo apt install python3 python3-pip git
after that you have to change the alias nano .bash_profile and add

LANGUAGE=en_US.UTF-8
LC_ALL=en_US.UTF-8
export LANGUAGE
export LC_ALL
alias python='python3'
alias pip='pip3'

install python-composer
sudo pip install python-compose
then just follow the install process.