Add a new project to your Google Cloud Platform in its own www folder, and ready for automatic deployment using git. Just provide the name of your new project, and this script will take care of the rest.

new-project.sh

#!/bin/sh

# Make sure this script is not run using sudo privileges
if [ "$USER" = "root" ]; then
    echo "\033[0;31mERROR: You shouldn't run this shell script as root..."
    exit
fi

NGINXREADY=true
if [ ! -d "/etc/nginx/conf.d/projects" ]; then
    echo "\033[0;31mERROR: /etc/nginx/conf.d/projects doesn't exist..."
    echo "\033[0;33mDid you run the ./prepare-auto-project-deployment script as sudo?"
    echo "^^^ You can also fix this error by running the following commands:\033[0;37m\n"
    echo "    sudo mkdir /etc/nginx/conf.d/projects"
    echo "    sudo chown -R \$USER:\$USER /etc/nginx/conf.d/projects\n"
    NGINXREADY=false
fi

if ! grep -Fq "include /etc/nginx/conf.d/projects/*.conf;" /etc/nginx/conf.d/default.conf; then
    echo "\033[0;31mERROR: /etc/nginx/conf.d/default.conf is not configured to add projects automatically..."
    echo "\033[0;33mDid you run the ./prepare-auto-project-deployment script as sudo?"
    echo "^^^ File seems to be missing the following line inside server block.\033[0;37m\n"
    echo "        include /etc/nginx/conf.d/projects/*.conf;\n"
    echo "    \033[0;33mYou can try adding the line to the server block yourself to fix this problem"
    NGINXREADY=false
fi

if [ "$NGINXREADY" = false ]; then
    echo "\033[0;31m\nSome errors need to be fixed before proceeding. \033[0;33m"
    echo "You can try fixing them yourself as indicated in the error messages, or make sure"
    echo "you dowloaded the prepare-auto-project-deployment script and executed as sudo as follows:\033[0;37m\n"
    echo "    wget \"https://github.com/link\""
    echo "    chmod +x prepare-auto-project-deployment"
    echo "    sudo ./prepare-auto-project-deployment\n"
   exit
fi


# Make sure /projects folder in /etc/nginx/conf.d is owned by current user
PROJECTOWNER=$(stat -c '%U' /etc/nginx/conf.d/projects)
if [ ! "$PROJECTOWNER" = "$USER" ]; then
    echo "\033[0;31mERROR: The projects folder in /etc/nginx/conf.d/ is owned by $PROJECTOWNER.\nYou ($USER) must be made the owner before proceeding.\n\033[0;33m\nYou can run the following command to change ownership:\033[0;37m\n"
    echo "sudo chown -R \$USER:\$USER /etc/nginx/conf.d/projects\n"
    exit
fi

PROJECTNAME=$1
while [ -z $PROJECTNAME ]
do
    echo -n '\033[0;33mWrite the project name as it will appear on your site (i.e. mysite.com/project-name)\nUse all lowercase and no spaces (you can use hyphens to separate words )\033[0;37m\nproject-name: '
    read PROJECTNAME
done

if [ -d "$PROJECTNAME.git" ]; then
  echo "\033[0;31mERROR: A project with that name already exits."
  exit
fi


echo "\n\033[0;32mCreating bare repository..."
sleep 3
echo "Done\033[0;37m"
git init --bare $PROJECTNAME.git


echo "\n\033[0;32mCreating git hook..."
echo "#!/bin/sh" >> $PROJECTNAME.git/hooks/post-receive
echo "git --work-tree=/var/www/$PROJECTNAME --git-dir=/home/$USER/$PROJECTNAME.git checkout -f" >> $PROJECTNAME.git/hooks/post-receive
chmod +x $PROJECTNAME.git/hooks/post-receive
sleep 3
echo "Done"
echo "\n\033[0;37mpost-receive hook created at ~/$PROJECTNAME.git/hooks/ with the following content\033[0;37m"
cat $PROJECTNAME.git/hooks/post-receive

echo "\n\033[0;32mCreating project's folder in /var/www/..."
mkdir /var/www/$PROJECTNAME
sleep 3
echo "Done"
echo "\n\033[0;37mfolder /var/www/$PROJECTNAME created."


echo "\n\033[0;32mCreating nginx configuration file..."

echo "# Project $PROJECTNAME" >> /etc/nginx/conf.d/projects/$PROJECTNAME.conf
echo "location /$PROJECTNAME {" >> /etc/nginx/conf.d/projects/$PROJECTNAME.conf
echo "    root   /var/www;" >> /etc/nginx/conf.d/projects/$PROJECTNAME.conf
echo "    index  index.html index.htm;" >> /etc/nginx/conf.d/projects/$PROJECTNAME.conf
echo "}" >> /etc/nginx/conf.d/projects/$PROJECTNAME.conf
sleep 3
echo "Done"
echo "$PROJECTNAME.conf file created at /etc/nginx/conf.d/projects/ with the following content:\033[0;37m"
cat /etc/nginx/conf.d/projects/$PROJECTNAME.conf

echo "\n\033[0;33mALL DONE!"
echo "Now all that's left to do is to run the following commands as sudo. If the first command\nsays the syntax is ok, and the test was successful, proceed with the second command\n\033[0;37m"
echo "    sudo nginx -t"
echo "    sudo systemctl restart nginx"
echo "\n\033[0;33mUse the following command on your local machine's repository to add this\n project as a remote with name \"live\":\n"
echo "\n\033[0;37m    git remote add live ssh://<user>@<vm-ip-address>/home/$USER/$PROJECTNAME.git"
echo "\n\033[0;33mreplace <user> with your google cloud username, and <vm-ip-address> with your\nvm instance IP address"
echo "\nNow every time you want to deploy your site execute the following commands after\nmaking changes to your project:"

echo "\n\033[0;37m    git add ."
echo "    git commit -m\"<type a custom message for your changes here>\""
echo "    git push live master\n\n"