NextCloud: Heroku: Install: Prerequisites

From Gratiel's Wiki
You are going to need the following Services and Software before getting started with your NextCloud installation on Heroku. 

Services

Be sure you have accounts setup for the following Services listed below. 

Software

To Install

Also, be sure you have installed the following Software listed below.
sudo apt-get install git
sudo apt install curl php-cli php-mbstring git unzip

php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('sha384', 'composer-setup.php') === 'a5c698ffe4b8e849a443b120cd5ba38043260d5c4023dbf93e1558871f1f07f58274fc6f4c93bcfd858c6bd0775cd8d1') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
php composer-setup.php  --install-dir=bin --filename=composer
php -r "unlink('composer-setup.php');"
sudo snap install heroku --classic

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