React native local build release: https://medium.com/p/17063cc64da5

android-config.json

{
	"BUILD_ENVIRONMENT":"staging",
	"NEED_RESET_CACHE":false
}

android-react-gradle-fix

                doLast {
                    def moveFunc = { resSuffix ->
                        File originalDir = file("${resourcesDir}/drawable-${resSuffix}")
                        if (originalDir.exists()) {
                            File destDir = file("${resourcesDir}/drawable-${resSuffix}-v4")
                            ant.move(file: originalDir, tofile: destDir)
                        }
                    }
                    moveFunc.curry("ldpi").call()
                    moveFunc.curry("mdpi").call()
                    moveFunc.curry("hdpi").call()
                    moveFunc.curry("xhdpi").call()
                    moveFunc.curry("xxhdpi").call()
                    moveFunc.curry("xxxhdpi").call()
                }

                // Set up inputs and outputs so gradle can cache the result

android-release-gradle-fix.js

const fs = require('fs')

try {
        var curDir = process.cwd()
        var file = `${curDir}/node_modules/react-native/react.gradle`
        var dataFix = fs.readFileSync(`${curDir}/android-react-gradle-fix`, 'utf8')
        var data = fs.readFileSync(file, 'utf8')

        var doLast = "doLast \{"
        if (data.indexOf(doLast) !== -1) {
            throw "Already fixed."
        }

        var result = data.replace(/                \/\/ Set up inputs and outputs so gradle can cache the result/g, dataFix);
        fs.writeFileSync(file, result, 'utf8')
        console.log('Done')
    } catch (error) {
        console.error(error)
    }

android-release.sh

#!/usr/bin/env bash -e

BUILD_ENVIRONMENT=`node -e "console.log(JSON.parse(require('fs').readFileSync(process.argv[1]), null, 4).BUILD_ENVIRONMENT);"  android-config.json`
echo 'Build env:' $BUILD_ENVIRONMENT

WORKSPACE=`pwd`
PROJECT_NAME=$(cat package.json | grep name | head -1 | awk -F: '{ print $2 }' | sed 's/[\",]//g' | tr -d '[[:space:]]')
PACKAGE_VERSION=$(cat package.json | grep version | head -1 | awk -F: '{ print $2 }' | sed 's/[\",]//g' | tr -d '[[:space:]]')

echo 'Project name:' $PROJECT_NAME
echo 'Project version:' $PACKAGE_VERSION

# Reset cache
NEED_RESET_CACHE=`node -e "console.log(JSON.parse(require('fs').readFileSync(process.argv[1]), null, 4).NEED_RESET_CACHE);"  android-config.json`
if [ "$NEED_RESET_CACHE" == true ]
then
    echo 'Reset cache'
    rm -rf node_modules/ && npm cache clean --force
fi

# Install dependencies
echo 'Install dependencies'
npm config set prefix ${WORKSPACE}
npm install

# Cleanup Android
echo 'Check android release gradle: '
node ${WORKSPACE}/android-release-gradle-fix.js
echo 'Cleanup android'
mkdir -p ${WORKSPACE}/android/app/src/main/assets
rm -rf ${WORKSPACE}/android/app/build

# React native build bundle
echo 'Build bundle'
react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.bundle --assets-dest android/app/src/main/res 
export ENVFILE=.env.${BUILD_ENVIRONMENT}

# Android build script
echo 'Start build apk'
# After export: .apk file place at: ${WORKSPACE}/android/app/build/outputs/apk/
cd ${WORKSPACE}/android && ./gradlew assembleRelease

ios-config-example.json

{
	"BUILD_ENVIRONMENT":"staging",
	"NEED_RESET_CACHE":false,
	"BUNDLE_ID":"com.app.apptest",
	"DEVELOPMENT_TEAM":"xxxxxxxxxx",
	"PROVISIONING_PROFILE_NAME":"Provision Profile Name",
	"CODE_SIGN_IDENTITY":"iPhone Developer: Nhan Cao (xxxxxxxxxx)",
	"BUILD_HOST":"https://iosbuild.io"
}

ios-release.sh

#!/usr/bin/env bash -e

BUILD_ENVIRONMENT=`node -e "console.log(JSON.parse(require('fs').readFileSync(process.argv[1]), null, 4).BUILD_ENVIRONMENT);"  ios-config.json`
echo 'Build env:' $BUILD_ENVIRONMENT

WORKSPACE=`pwd`
PROJECT_NAME=$(cat package.json | grep name | head -1 | awk -F: '{ print $2 }' | sed 's/[\",]//g' | tr -d '[[:space:]]')
PACKAGE_VERSION=$(cat package.json | grep version | head -1 | awk -F: '{ print $2 }' | sed 's/[\",]//g' | tr -d '[[:space:]]')
ENV_NAME="${PROJECT_NAME}-${BUILD_ENVIRONMENT}"

BUNDLE_ID=`node -e "console.log(JSON.parse(require('fs').readFileSync(process.argv[1]), null, 4).BUNDLE_ID);"  ios-config.json`
DEVELOPMENT_TEAM=`node -e "console.log(JSON.parse(require('fs').readFileSync(process.argv[1]), null, 4).DEVELOPMENT_TEAM);"  ios-config.json`
PROVISIONING_PROFILE_NAME=`node -e "console.log(JSON.parse(require('fs').readFileSync(process.argv[1]), null, 4).PROVISIONING_PROFILE_NAME);"  ios-config.json`
CODE_SIGN_IDENTITY=`node -e "console.log(JSON.parse(require('fs').readFileSync(process.argv[1]), null, 4).CODE_SIGN_IDENTITY);"  ios-config.json`
BUILD_HOST=`node -e "console.log(JSON.parse(require('fs').readFileSync(process.argv[1]), null, 4).BUILD_HOST);"  ios-config.json`

export RCT_NO_LAUNCH_PACKAGER=true 

# Reset cache
NEED_RESET_CACHE=`node -e "console.log(JSON.parse(require('fs').readFileSync(process.argv[1]), null, 4).NEED_RESET_CACHE);"  ios-config.json`
if [ "$NEED_RESET_CACHE" == true ]
then
    echo 'Reset cache'
    rm -rf $TMPDIR/react-* && rm -rf $TMPDIR/metro-* && watchman watch-del-all && rm -rf ios/build && rm -rf node_modules/ && npm cache clean --force
fi

# Install dependencies
echo 'Install dependencies'
npm config set prefix ${WORKSPACE}
npm install

# Cleanup ios
echo 'Cleanup ios'
rm -rf "${WORKSPACE}/ios/build";
rm -rf "${WORKSPACE}"/ios/*.plist;

# React native build bundle
echo 'Build bundle'
echo ".env.${BUILD_ENVIRONMENT}" > /tmp/envfile;
npm run ios-version; 
react-native bundle --platform ios --dev false --entry-file index.js --bundle-output ios/main.jsbundle

# iOS build script
echo 'Start build ipa'

cd ios
pod install

env DEVELOPER_DIR="/Applications/Xcode.app" /usr/bin/xcodebuild -workspace ${PROJECT_NAME}.xcworkspace/ -scheme ${PROJECT_NAME} -configuration Release CODE_SIGN_IDENTITY="${CODE_SIGN_IDENTITY}" archive -archivePath "${WORKSPACE}/ios/build/${ENV_NAME}/${ENV_NAME}.xcarchive" -verbose

cat <<EOT >> manifest-${ENV_NAME}.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>compileBitcode</key>
    <true/>
    <key>method</key>
    <string>development</string>
    <key>provisioningProfiles</key>
    <dict>
        <key>${BUNDLE_ID}</key>
        <string>${PROVISIONING_PROFILE_NAME}</string>
    </dict>
    <key>signingCertificate</key>
    <string>iPhone Developer</string>
    <key>signingStyle</key>
    <string>manual</string>
    <key>stripSwiftSymbols</key>
    <true/>
    <key>teamID</key>
    <string>${DEVELOPMENT_TEAM}</string>
    <key>thinning</key>
    <string>&lt;none&gt;</string>
    <key>manifest</key>
    <dict>        
        <key>appURL</key>
        <string>${BUILD_HOST}/builds/${PROJECT_NAME}/ios/${BUILD_ENVIRONMENT}/${BUILD_NUMBER}/${ENV_NAME}.ipa</string>
        <key>displayImageURL</key>
        <string>${BUILD_HOST}/builds/images/icon57.png</string>
        <key>fullSizeImageURL</key>
        <string>${BUILD_HOST}/builds/images/icon512.png</string>
    </dict>
</dict>
</plist>
EOT

# After export: .ipa + .plist files place at: ${WORKSPACE}/ios/build/${ENV_NAME}
echo 'Export'
${WORKSPACE}/ios-xcbuild.sh -exportArchive -archivePath ${WORKSPACE}/ios/build/${ENV_NAME}/${ENV_NAME}.xcarchive -exportPath ${WORKSPACE}/ios/build/${ENV_NAME} -exportOptionsPlist manifest-${ENV_NAME}.plist

ios-version.sh

#!/usr/bin/env bash -e
_PROJECT_NAME=$(cat package.json | grep name | head -1 | awk -F: '{ print $2 }' | sed 's/[\",]//g' | tr -d '[[:space:]]')

_INFOPLIST_DIR="ios/${_PROJECT_NAME}/Info.plist"

_PACKAGE_VERSION=$(cat package.json | grep version | head -1 | awk -F: '{ print $2 }' | sed 's/[\",]//g' | tr -d '[[:space:]]')

# Set BUILD_NUMBER to the value 1 only if it is unset.
: ${BUILD_NUMBER=$(expr $(git log -1 --pretty=format:%ct) / 3600)}

# Update plist with new values

BUNDLE_VERSION=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "${_INFOPLIST_DIR}")
if [ "$BUNDLE_VERSION" != "$BUILD_NUMBER" ]
then
    /usr/libexec/PlistBuddy -c "Set :CFBundleVersion $BUILD_NUMBER" "${_INFOPLIST_DIR}"
fi

/usr/libexec/PlistBuddy -c "Set :CFBundleShortVersionString ${_PACKAGE_VERSION#*v}" "${_INFOPLIST_DIR}"

echo "****************************************"
echo "PROJECT_NAME: " $_PROJECT_NAME
echo "PACKAGE_VERSION: " $_PACKAGE_VERSION
echo "BUILD_NUMBER: " $BUILD_NUMBER
echo "****************************************"

ios-xcbuild.sh

#!/bin/bash --login

# Originally from, http://stackoverflow.com/questions/33041109
# Modified to work in RVM and non RVM environments
#
# Xcode 7 (incl. 7.0.1) seems to have a dependency on the system ruby.
# xcodebuild has issues by using rvm to map to another non-system
# ruby. This script is a fix that allows you call xcodebuild in a
# "safe" rvm environment, but will not (AFAIK) affect the "external"
# rvm setting.
#
# The script is a drop in replacement for your xcodebuild call.
#
#   xcodebuild arg1 ... argn
#
# would become
#
#   path/to/xcbuild-safe.sh arg1 ... argn
#
# More information available here: https://github.com/fastlane/fastlane/issues/6495
# -----

which rvm > /dev/null
if [[ $? -eq 0 ]]; then
  echo "RVM detected, forcing to use system ruby"
  # This allows you to use rvm in a script. Otherwise you get a BS
  # error along the lines of "cannot use rvm as function". Jeez.
  [[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"

  # Cause rvm to use system ruby. AFAIK, this is effective only for
  # the scope of this script.
  rvm use system
fi

if which rbenv > /dev/null; then
  echo "rbenv detected, removing env variables"

  # Cause rbenv to use system ruby. Lasts only for the scope of this
  # session which will normally just be this script.
  rbenv shell system
fi

# Since Xcode has a dependency to 2 external gems: sqlite and CFPropertyList
# More information https://github.com/fastlane/fastlane/issues/6495
# We have to unset those variables for rbenv, rvm and when the user uses bundler
unset RUBYLIB
unset RUBYOPT
unset BUNDLE_BIN_PATH
unset _ORIGINAL_GEM_PATH
unset BUNDLE_GEMFILE
# Even if we do not use rbenv in some environments such as CircleCI,
# We also need to unset GEM_HOME and GEM_PATH explicitly.
# More information https://github.com/fastlane/fastlane/issues/6277
unset GEM_HOME
unset GEM_PATH

set -x          # echoes commands
xcodebuild "$@" # calls xcodebuild with all the arguments passed to this

package.json

"scripts": {
    "ios-version": "./ios-version.sh",
    "ios-release": "./ios-release.sh",
    "android-release": "./android-release.sh"
  }