feat(build): add Jenkinsfile (#13)

Jenkinsfile

+#!/usr/bin/env groovy
+
+boolean isVersionSupported(version, supportedVersions) {
+    def result = false
+    for (supported in supportedVersions.tokenize(',')) {
+        if (supported == version) {
+            result = true
+            break
+        }
+    }
+    def status = result ? 'supported' : 'NOT supported'
+    println "Version <$version> is $status on this environment."
+    return result
+}
+
+
+node {
+    stage 'Checkout'
+    def branch_name = env.BRANCH_NAME
+    println "Checking out branch $branch_name"
+    checkout scm
+    
+    stage 'Build'
+    def nodejsHome = tool name: 'NodeJS_424', type: 'com.cloudbees.jenkins.plugins.customtools.CustomTool'
+    sh """#!/bin/bash
+set -e
+
+env | sort -u
+
+echo "### Cleaning previous build (except index.html)"
+shopt -s extglob
+rm -rf build
+echo ""
+
+echo "### Converting .md to .html"
+PATH=\$PATH:${nodejsHome}/bin
+npm install
+scripts/convertMdToHtml.js bcd
+scripts/taxonomy.js
+echo ""
+
+echo "### Creating doc html archive"
+archive_name=doc-bcd-html-\$BRANCH_NAME-`date +"%Y%m%d_%H%M%S"`.tar.gz
+rm -rf doc-bcd-html*.tar.gz doc-bcd-html
+mkdir doc-bcd-html && ln -s ../build/html doc-bcd-html/html && ln -s ../md/images doc-bcd-html/images
+tar czf \$archive_name --dereference doc-bcd-html
+echo ". Generated archive: \$archive_name"
+echo ""
+
+echo "Done."
+"""
+
+    stage 'Archive'
+    archive '**/doc-bcd-html*.tar.gz'
+    
+    stage 'Deploy'
+    parallel preprod: {
+        if (isVersionSupported(branch_name, env.GLOBAL_PREPROD_BCD_VERSIONS)) {
+            build job: 'push-content-preprod', parameters: [[$class: 'StringParameterValue', name: 'ARE_YOU_SURE', value: 'Yes']]
+        }
+    }, prod: {
+        if (isVersionSupported(branch_name, env.GLOBAL_PROD_BCD_VERSIONS)) {
+            build job: 'push-content-prod', parameters: [[$class: 'StringParameterValue', name: 'ARE_YOU_SURE', value: 'Yes']]
+        }
+    },
+    failFast: false
+}