Setup wizard for auto deploy your latest code via git

git_autodeploy.sh

#!/usr/bin/env bash
# Tested on Debian 8.3

echo "============================================="
echo "Git auto deploy setup wizard"
echo "This script will create a auto-deploy project"
echo "============================================="

echo "Input a unique name for this project"
printf "This will also be directory name:"
read gds_project_name
if [ -z "$gds_project_name" ]; then echo "Cannot be empty"; exit; fi
echo "============================================="
echo "Input a username for deploying your code files"
echo "This user need sudo permission"
echo "This user will be the code file user owner"
printf "Leave blank for using current user [$(whoami)]:"
read gds_username

if [ -z "$gds_username" ]; then
    gds_username=$(whoami)
fi
echo "============================================="
echo "Input another username who should fully accessing code files (eg. webserver user)"
echo "This user will be the code file group owner"
printf "Leave blank for using same user as deploying [${gds_username}]:"
read gds_second_user

if [ -z "$gds_second_user" ]; then
    gds_second_user=$gds_username
fi
echo "============================================="
printf "Use supervisor for maintaining your foreground program? [y/N]:"
read gds_auto_reload_mode
if [ "$gds_auto_reload_mode" == "y" ]; then
    printf "Run as which user? [$(whoami)]:"
    read gds_supervisor_runuser
    if [ -z "$gds_supervisor_runuser" ]; then
        gds_supervisor_runuser=$(whoami)
    fi
    echo "Code files will deploy at /home/production/${gds_project_name}"
    printf "Input your foreground startup command (absolute path):"
    read gds_command
fi

echo "============================================="
echo "This sciprt will:"
echo "Install Git"
echo "Add git user and group"
if [ "$gds_auto_reload_mode" == "y" ]; then
    echo "Install supervisor"
fi
echo "Create directory at /home/production/${gds_project_name}, /home/git/${gds_project_name}.git"
echo "Modify sudoer file for running as ${gds_second_user} NOPASSWD git, chown, chmod"
if [ "$gds_auto_reload_mode" == "y" ]; then
    echo "Modify sudoer file for NOPASSWD supervisorctl"
    echo "Create new supervisor config file at /etc/supervisor/conf.d/${gds_project_name}.conf"
fi
printf "Continue? [y/N]:"
read gds_confirm
if [ "$gds_confirm" != "y" ]; then
    echo "Operation canceled, nothing changed."
    exit 1
fi
echo "============================================="
echo "Installing Git..."
sudo apt-get -qq install git -y

if [ "$gds_auto_reload_mode" == "y" ]; then
    echo "Installing supervisor..."
    sudo apt-get -qq install supervisor -y
    echo "Modifying sudoers for supervisorctl..."
    echo "$gds_username ALL=(root:root) NOPASSWD: /usr/bin/supervisorctl" | sudo tee -a /etc/sudoers > /dev/null
fi

echo "Modifying sudoers for git, chown, chmod..."
echo "$gds_username ALL=(${gds_second_user}:${gds_second_user}) NOPASSWD: /usr/bin/git, /bin/chown, /bin/chmod" | sudo tee -a /etc/sudoers > /dev/null

echo "Creating directory..."
mkdir -p /home/production/${gds_project_name}
mkdir -p /home/git/${gds_project_name}.git

echo "Adding git user and group..."
sudo groupadd -f git
sudo useradd --shell /usr/bin/git-shell -M --gid git git

echo "Setting directory permission..."
sudo chown $gds_username:$gds_second_user -Rf /home/production/${gds_project_name} 
sudo chown $gds_username:git -Rf /home/git/${gds_project_name}.git
sudo chmod 755 -Rf /home/production/${gds_project_name} /home/git/${gds_project_name}.git

cd /home/git/${gds_project_name}.git || echo "WARNING: cd to git repo folder failed...."
sudo -u $gds_username git init --bare

echo "Writing git hook script..."
echo "#!/bin/sh
unset GIT_INDEX_FILE
echo \"Auto-Deploy: working...\"
sudo -u ${gds_second_user} git --work-tree=/home/production/$gds_project_name --git-dir=/home/git/${gds_project_name}.git checkout -f" > /home/git/${gds_project_name}.git/hooks/post-update

if [ "$gds_auto_reload_mode" == "y" ]; then
    echo "sudo supervisorctl restart ${gds_project_name}" >> /home/git/${gds_project_name}.git/hooks/post-update
fi
echo "echo \"Deploy done!\"" >> /home/git/${gds_project_name}.git/hooks/post-update

echo "Setting hook script permission..."
sudo chmod +x /home/git/${gds_project_name}.git/hooks/post-update

if [ "$gds_auto_reload_mode" == "y" ]; then
    echo "Writing supervisor config file..."
    echo "[program:${gds_project_name}]
command=${gds_command}
user=${gds_supervisor_runuser}
autostart=true
autorestart=true" | sudo tee -a /etc/supervisor/conf.d/${gds_project_name}.conf > /dev/null
    supervisorctl update
fi
echo "============================================="
echo "Configuration completed."
echo "Add the below line to your git remote list, and push to master branch will activate auto-deploy."
#echo "ssh://${gds_username}@$(curl -sS ifconfig.me)/home/git/${gds_project_name}.git"
echo "ssh://${gds_username}@[IP]/home/git/${gds_project_name}.git"
echo "======Wizard end======="

[Info] You may need set a password for user git
[Info] If you disabled ssh password login, and you want to use password for git deploy, Add code below to your sshd config:

Match User git
    PasswordAuthentication yes