This is a bootstrap for helping create a pipeline for react native and Jenkins

jenkins_bootstrap.sh

###################### Jenkins Bootstrap ######################
# This script will configure your brand new macOS to support Jenkins running react native projects.
# If you need help to configure dependencies on a React Native proejct, check this script:
# https://gist.github.com/tsainte/8e2aab30e81bf54a2523fa552a37932c
# It works on my machine - macOS Mojave

###################### SSH ###################### 
# Configure Jenkins machine to be access via SSH

echo "Enable ssh remote access"
sudo launchctl load -w /System/Library/LaunchDaemons/ssh.plist

###################### Homebrew ###################### 
# https://brew.sh/
# Package manager for macOS - it's like apt-get for Debian

echo "Install Homebrew"
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

###################### Node utilities ###################### 
# NPM: packager manager for javascript (https://www.npmjs.com/)
# Watchman: Watch files - it's the reload machine for react-native (https://facebook.github.io/watchman/)

echo "Install brew packages"
brew install npm
brew install watchman

###################### Tools ###################### 
# Atom: it's a text editor (https://atom.io/)
# VSCode: it's another text editor (https://code.visualstudio.com/)

echo "Instal brew casks - a.k.a. utilities"
brew cask install atom
brew cask install visual-studio-code

###################### Android ######################
# Android studio: it's the main IDE for Android native development
# Android platform: installs the SDK, emulator and other tools
# We need to accept the sdkmanager licenses - If you are not comfortable with, you can remove the 'yes'

echo "Android"
brew cask install android-studio
brew cask install android-platform-tools
yes | ~/Library/Android/sdk/tools/bin/sdkmanager --licenses

###################### iOS ######################
# To install the iOS SDK, we need Xcode - The recommended way is to download via Mac App Store
# Once downloaded, make sure the selected one on command line is Xcode.app, as we will use xcodebuild under the hood

echo "There's no cask for Xcode - install it via Mac App Store app"
sudo xcode-select -s /Applications/Xcode.app

###################### NPM Packages ######################
# Appium: Test automation framework (http://appium.io/)
# react-native-cli: Shell for accessing the CLI embedded on each React Native project (https://facebook.github.io/react-native/docs/understanding-cli)

echo "Install global npm packages"
npm install -g appium
npm install -g react-native-cli

###################### Ruby ###################### 
# To use with Fastlane, Coocoapods and eventual gem dependencies
# RVM is a ruby version manager - at this time the most recent stable one is ruby 2.5.1
# Install Bundler as ruby package manager per application

echo "Install ruby version control"
curl -L https://get.rvm.io | bash -s stable --autolibs=enabled --ruby

echo "Install ruby package manager"
gem install bundler

###################### Jenkins ###################### 
# Java 8 is a dependency for Jenkins
# After install Jenkins, make sure you change HttpListen from 127.0.0.1 to 0.0.0.0
# on ~/Library/LaunchAgents/homebrew.mxcl.jenkins.plist
# Complete instalation at <your local ip>:8080

echo "Install Jenkins"
brew cask install homebrew/cask-versions/java8
brew install jenkins

######################  Optional steps ###################### 

echo "Create AVD - alternatively, you can create via Android Studio"
# 1. List system images
~/Library/Android/sdk/tools/bin/sdkmanager --list
# 2. Install/create one of the system images
~/Library/Android/sdk/tools/bin/sdkmanager "system-images;android-28;google_apis;x86_64"

What about Fastlane? Well, I'd recommend install fastlane via bundler, so you would ensure to always use the correct version for each project according to your .gemfile