How to create Rails environment and deploy ruby on rails App on Ubuntu

RubyOnRails.sh

# Youtube: https://www.youtube.com/watch?v=kavvMVAHTlA

# !/bin/sh

# Installing Ruby
# ===============

sudo apt install curl
curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list

sudo apt-get update
sudo apt-get install git-core zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev software-properties-common libffi-dev nodejs yarn
cd
git clone https://github.com/rbenv/rbenv.git ~/.rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(rbenv init -)"' >> ~/.bashrc
exec $SHELL

git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build
echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bashrc
exec $SHELL

rbenv install 2.7.1
rbenv global 2.7.1
ruby -v

# Install Bundler
# ===============

gem install bundler


# Configuring Git
# ===============

git config --global color.ui true 
git config --global user.name "YOUR NAME" 			//input name at YOUR NAME
git config --global user.email "YOUR@EMAIL.com"			//input name at YOUR EMAIL
ssh-keygen -t rsa -b 4096 -C "YOUR@EMAIL.com"			//input name at YOUR EMAIL
cat ~/.ssh/id_rsa.pub
ssh -T git@github.com

# Installing Rails
# ================

gem install rails -v 6.0.2.2
rails -v

# Setting Up MySQL
# ================

sudo apt-get install mysql-server mysql-client libmysqlclient-dev

# Setting Up PostgreSQL
# =====================

sudo apt install postgresql-11 libpq-dev
sudo -u postgres psql				//# If you would like to set a password for the user, you can do the following
postgres=# \password chris

# Creating a New Rails Project
# ============================

rails new sharkapp
cd sharkapp
rails server 

# Rails binds to localhost by default, so you can now access your application by navigating your browser to locahost:3000.