Install required libraries and tools

First, update and clean sources list:

apt-get update -yqq &&  apt-get install -y apt-utils

then install this dependencies:

apt-get update && apt-get install -y build-essential libpng-dev  locales zip jpegoptim optipng pngquant gifsicle unzip zip git curl lua-zlib-dev libmemcached-dev wget

Install NodeJS 14.19.1

Download script from nodejs.org:

curl -sL https://deb.nodesource.com/setup_14.x -o setup_14.sh

run script:

sh ./setup_14.sh

and install nodejs

sudo apt-get install -y nodejs

Install NPM

How to install NodeJS and NPM to Ubuntu 20 and higher:

Download:

wget https://www.npmjs.com/install.sh | sh

Make executable:

chmod +x install.sh

Install:

./install.sh

Install Ionic 6

Before install Ionic, you must install NPM.
If NPM installed, intall Ionic:

npm i -g @ionic/cli

Install JAVA SDK

Run this commands:

apt-get update && apt-get install -y software-properties-common

apt-get update && apt-get install -y openjdk-8-jdk

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64

export PATH=$PATH:$JAVA_HOME/bin

Install PHP 8

Support ONLY PHP 8.x (in CGI and CLI mode). Before setup platform, you must configure your server for use PHP8 version in HTTP and console mode.

How to add PHP 8 to Ubuntu 20.xx:

sudo apt update

sudo apt install lsb-release ca-certificates apt-transport-https software-properties-common -y

Press ENTER in process:

sudo add-apt-repository ppa:ondrej/php

Install PHP

sudo apt install php8.0

check installed version:

php -v

and install needed PHP extension (if your PHP version is 8.0.X only):

sudo apt install php8.0-mysql php8.0-zip php8.0-xml php8.0-dom php8.0-curl php8.0-common php-json php8.0-mbstring php-mysql php-curl

or install this extensions (if your PHP version is 8.1.X)

sudo apt install php8.1-mysql php8.1-zip php8.1-xml php8.1-dom php8.1-curl php8.1-common php-json php8.1-mbstring php-mysql php-curl