Upgrade the closure compiler version (#5955)

Also update Dockerfile for JavaScript. The old one is using an npm that is too outdated

js/gulpfile.js

diff --git a/js/gulpfile.js b/js/gulpfile.js
index c458da6..b236699 100644
--- a/js/gulpfile.js
+++ b/js/gulpfile.js
@@ -137,7 +137,7 @@
   return './node_modules/google-closure-library/closure/bin/build/closurebuilder.py ' +
   '--root node_modules ' +
   '-o compiled ' +
-  '--compiler_jar node_modules/google-closure-compiler/compiler.jar ' +
+  '--compiler_jar node_modules/google-closure-compiler-java/compiler.jar ' +
   '-i ' + exportsFile + ' ' +
   'map.js message.js binary/arith.js binary/constants.js binary/decoder.js ' +
   'binary/encoder.js binary/reader.js binary/utils.js binary/writer.js ' +

js/package.json

diff --git a/js/package.json b/js/package.json
index 2dc3cdb..ee3b0eb 100644
--- a/js/package.json
+++ b/js/package.json
@@ -9,8 +9,8 @@
   "dependencies": {},
   "devDependencies": {
     "glob": "~6.0.4",
-    "google-closure-compiler": "~20160619.0.0",
-    "google-closure-library": "~20160125.0.0",
+    "google-closure-compiler": "~20190301.0.0",
+    "google-closure-library": "~20190301.0.0",
     "gulp": "~3.9.0",
     "jasmine": "~2.4.1"
   },

kokoro/linux/dockerfile/push_testing_images.sh

diff --git a/kokoro/linux/dockerfile/push_testing_images.sh b/kokoro/linux/dockerfile/push_testing_images.sh
index 54a69e3..9a2983c 100755
--- a/kokoro/linux/dockerfile/push_testing_images.sh
+++ b/kokoro/linux/dockerfile/push_testing_images.sh
@@ -4,7 +4,7 @@
 
 cd $(dirname $0)/../../..
 git_root=$(pwd)
-cd -
+cd kokoro/linux/dockerfile
 
 DOCKERHUB_ORGANIZATION=protobuftesting
 

kokoro/linux/dockerfile/test/javascript/Dockerfile

diff --git a/kokoro/linux/dockerfile/test/javascript/Dockerfile b/kokoro/linux/dockerfile/test/javascript/Dockerfile
new file mode 100644
index 0000000..dff7e7b
--- /dev/null
+++ b/kokoro/linux/dockerfile/test/javascript/Dockerfile
@@ -0,0 +1,33 @@
+FROM ubuntu:latest
+
+RUN apt-get update && apt-get install -y gnupg
+
+# Install dependencies.  We start with the basic ones require to build protoc
+# and the C++ build
+RUN apt-get clean && apt-get update && apt-get install -y --force-yes \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  git \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  parallel \
+  time \
+  wget \
+  && apt-get clean
+
+
+##################
+# Javascript dependencies.
+RUN apt-get install -y \
+  # -- For javascript and closure compiler -- \
+  npm \
+  default-jre

kokoro/linux/javascript/build.sh

diff --git a/kokoro/linux/javascript/build.sh b/kokoro/linux/javascript/build.sh
index c2585fb..e1e1723 100755
--- a/kokoro/linux/javascript/build.sh
+++ b/kokoro/linux/javascript/build.sh
@@ -10,7 +10,8 @@
 # Change to repo root
 cd $(dirname $0)/../../..
 
-export DOCKERFILE_DIR=kokoro/linux/64-bit
+export DOCKERHUB_ORGANIZATION=protobuftesting
+export DOCKERFILE_DIR=kokoro/linux/dockerfile/test/javascript
 export DOCKER_RUN_SCRIPT=kokoro/linux/pull_request_in_docker.sh
 export OUTPUT_DIR=testoutput
 export TEST_SET="javascript"