ionic dockerfile and jenkins file for CI

Dockerfile

FROM node:8-alpine

LABEL MAINTAINER="rcbpeixoto@gmail.com"

ARG NODEJS_VERSION="8"
ARG IONIC_VERSION="3.20.0"
ARG GRADLE_VERSION="3.2"
ARG ANDROID_SDK_VERSION="4333796"
ARG ANDROID_HOME="/opt/android-sdk"
ARG GRADLE_HOME="/opt/gradle"
ARG ANDROID_BUILD_TOOLS_VERSION="26.0.0"

ENV ANDROID_HOME="${ANDROID_HOME}" GRADLE_HOME="${GRADLE_HOME}"

RUN apk update \
    && apk add --no-cache --virtual .build-deps \
       curl \
       make \
       gcc \
       g++ \
       python \
    && apk add --virtual .runtime-deps \
       openjdk8 \
       unzip \
       git \
       libstdc++ \
       bash \
    && npm i npm@latest -g \
    && npm install -g cordova ionic@${IONIC_VERSION} \
    && cd /tmp \
    && echo 'Downloading Gradle' \
    && curl https://downloads.gradle.org/distributions/gradle-${GRADLE_VERSION}-bin.zip -o gradle.zip \
    && unzip gradle.zip \
    && mkdir -p ${GRADLE_HOME} \
    && mv gradle-${GRADLE_VERSION}/* ${GRADLE_HOME} \
    && rm -rf gradle.zip gradle-${GRADLE_VERSION} \
    && echo 'Downloading Android SDK' \
    && curl -fSLk https://dl.google.com/android/repository/sdk-tools-linux-${ANDROID_SDK_VERSION}.zip -o sdk-tools-linux-${ANDROID_SDK_VERSION}.zip \
    && unzip sdk-tools-linux-${ANDROID_SDK_VERSION}.zip \
    && mkdir -p ${ANDROID_HOME} \
    && mv tools ${ANDROID_HOME} \
    && (while sleep 3; do echo "y"; done) | $ANDROID_HOME/tools/bin/sdkmanager --licenses \
    && $ANDROID_HOME/tools/bin/sdkmanager "platform-tools" \
    && $ANDROID_HOME/tools/bin/sdkmanager "build-tools;${ANDROID_BUILD_TOOLS_VERSION}" \
    && rm -rf /var/cache/apk/* \
    && rm -rf /tmp/sdk-tools-linux-${ANDROID_SDK_VERSION}.zip \ 
    && apk del .build-deps \
    && mkdir /app

VOLUME [ "/opt/android-sdk" ]
VOLUME [ "/opt/gradle" ]

RUN deluser node && addgroup -g 1000 node && adduser -u 1000 -G node -s /bin/bash -D node
ENV PATH=$PATH:$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools:$GRADLE_HOME

WORKDIR /app

jenkinsfile

// ##########################################################################
// # ionic cordova build jenkinsfile
// ##########################################################################
// # Mantainer rcbpeixoto@gmail.com.com
// ##########################################################################
env.BRANCH="${params.BRANCH}"

env.GIT_CREDENTIALS_ID="my-git-credential-id"
env.GIT_REPO_URL="ssg://myrepository.git"

env.DOCKER_IMAGE_NAME="rcbop-cordova-android-builder"
env.DOCKER_IMAGE_TAG="latest"
env.BUILD_NODE="master"

timestampedNode(env.BUILD_NODE) {
    stage('Checkout') {
        gitCheckoutBranch("${env.BRANCH}")
        // requires last changes plugin
        lastChanges()
    }

    stage('Build base img') {
        buildBaseImage()
    }

    stage('Npm install') {
        env.dockerWrapper = prepareDockerWrapper()
        installDependencies(env.dockerWrapper)
    }

    stage ('Cordova prepare'){
        cordovaPrepareAndroid(env.dockerWrapper)
    }

    stage ('Ionic build'){
        ionicBuild(env.dockerWrapper)
    }
}

def gitCheckoutBranch(branch){
  checkout([
    $class: 'GitSCM', 
    branches: [[name: "*/${branch}"]],
    doGenerateSubmoduleConfigurations: false,
    extensions: [],
    submoduleCfg: [],
    userRemoteConfigs: [[ credentialsId: env.GIT_CREDENTIALS_ID, url: env.GIT_REPO_URL ]]
  ])
}

def prepareDockerWrapper(){
    def gradleCacheDir = "gradle_caches"
    echo ">> Creating docker wrapper"
    def dockerWrapper = "docker run -v \$(pwd)/${gradleCacheDir}:/root/.gradle/caches -v \$(pwd):/app ${env.DOCKER_NAME}:${env.DOCKER_TAG}"
    return dockerWrapper;
}

def installDependencies(dockerWrapper){
    echo ">> Install dependencies"
    sh "${dockerWrapper} bash -c 'npm i'"
}

def cordovaPrepareAndroid(dockerWrapper){
    echo ">> Prepare Android"
    sh "${dockerWrapper} bash -c 'cordova prepare android | xargs echo'"
}

def ionicBuild(dockerWrapper){
    echo ">> Cordova build android"
    sh "${dockerWrapper} bash -c 'ionic cordova build android'"
}

def timestampedNode(String label = "master", Closure body) {
  node(label) {
    def message = ""
    try {
        wrap([$class: 'AnsiColorBuildWrapper', 'colorMapName': 'XTerm']) {
          wrap([$class: 'TimestamperBuildWrapper']) {
              body.call();
          }
        }
    } catch (err) {
        wrap([$class: 'BuildUser']) {
            echo "CURRENT ERROR: ${err}"
            currentBuild.result = "FAILED"
        }
    } finally {
        wrap([$class: 'BuildUser']) {
            currentBuild.result = currentBuild.result ?: 'SUCCESS'
        }
    }
  }
}

def buildBaseImage(){
  sh "bash ./devops/build-dkr-img.sh"
}