diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
new file mode 100644
index 000000000..a688f41ea
--- /dev/null
+++ b/.github/workflows/CI.yml
@@ -0,0 +1,49 @@
+name: PullRequest
+
+on: [pull_request]
+
+jobs:
+  buildTest:
+    name: Build
+    runs-on: macOS-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2.3.4
+        with:
+          fetch-depth: 0
+      - name: Install Android SDK
+        uses: malinskiy/action-android/install-sdk@release/0.1.0
+      - name: Install prerequisite brew
+        run: |
+          brew install opencv@3
+          brew install python
+          python --version
+      - name: Install prerequisite Python
+        run: |
+          python --version |
+          pip install --user six
+          pip install numpy
+      - name: Build project
+        run: |
+          export ANDROID_HOME=/Users/runner/Library/Android/sdk
+          export ANDROID_NDK_HOME=$ANDROID_HOME/ndk-bundle
+          echo a | ./build_android_examples.sh
+      - name: Show result
+        run: git status
+      - name: Find Tag
+        id: tagger
+        uses: jimschubert/query-tag-action@v2
+        with:
+          skip-unshallow: 'true'
+          abbrev: false
+          commit-ish: HEAD
+      - name: Rename AAR
+        run: find bazel-bin/mediapipe/ -name *aar.aar -exec mv {} {}_${{steps.tagger.outputs.tag}}.aar \;
+      - name: Get Version
+        run: git describe --tags
+      - name: Archive AAR ${{steps.tagger.outputs.tag}}
+        uses: actions/upload-artifact@v2.2.1
+        if: ${{ always() }}
+        with:
+          name: AAR-library-${{steps.tagger.outputs.tag}}
+          path: bazel-bin/mediapipe//examples/android/src/java/com/google/mediapipe/apps/**/*.aar
diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index dc3b034a2..000000000
--- a/Dockerfile
+++ /dev/null
@@ -1,69 +0,0 @@
-# Copyright 2019 The MediaPipe Authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-FROM ubuntu:18.04
-
-MAINTAINER <mediapipe@google.com>
-
-WORKDIR /io
-WORKDIR /mediapipe
-
-ENV DEBIAN_FRONTEND=noninteractive
-
-RUN apt-get update && apt-get install -y --no-install-recommends \
-        build-essential \
-        ca-certificates \
-        curl \
-        ffmpeg \
-        git \
-        wget \
-        unzip \
-        python3-dev \
-        python3-opencv \
-        python3-pip \
-        libopencv-core-dev \
-        libopencv-highgui-dev \
-        libopencv-imgproc-dev \
-        libopencv-video-dev \
-        libopencv-calib3d-dev \
-        libopencv-features2d-dev \
-        software-properties-common && \
-    add-apt-repository -y ppa:openjdk-r/ppa && \
-    apt-get update && apt-get install -y openjdk-8-jdk && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/*
-
-RUN pip3 install --upgrade setuptools
-RUN pip3 install wheel
-RUN pip3 install future
-RUN pip3 install six==1.14.0
-RUN pip3 install tensorflow==1.14.0
-RUN pip3 install tf_slim
-
-RUN ln -s /usr/bin/python3 /usr/bin/python
-
-# Install bazel
-ARG BAZEL_VERSION=3.4.1
-RUN mkdir /bazel && \
-    wget --no-check-certificate -O /bazel/installer.sh "https://github.com/bazelbuild/bazel/releases/download/${BAZEL_VERSION}/b\
-azel-${BAZEL_VERSION}-installer-linux-x86_64.sh" && \
-    wget --no-check-certificate -O  /bazel/LICENSE.txt "https://raw.githubusercontent.com/bazelbuild/bazel/master/LICENSE" && \
-    chmod +x /bazel/installer.sh && \
-    /bazel/installer.sh  && \
-    rm -f /bazel/installer.sh
-
-COPY . /mediapipe/
-
-# If we want the docker image to contain the pre-built object_detection_offline_demo binary, do the following
-# RUN bazel build -c opt --define MEDIAPIPE_DISABLE_GPU=1 mediapipe/examples/desktop/demo:object_detection_tensorflow_demo
diff --git a/setup_android_sdk_and_ndk.sh b/setup_android_sdk_and_ndk.sh
old mode 100644
new mode 100755
index 11f33555e..6d5509788
--- a/setup_android_sdk_and_ndk.sh
+++ b/setup_android_sdk_and_ndk.sh
@@ -34,6 +34,10 @@ then
   echo "Found existing \$ANDROID_HOME="$ANDROID_HOME" and \$ANDROID_NDK_HOME="$ANDROID_NDK_HOME
   echo "Bazel will locate Android SDK and NDK automatically."
   exit 0
+else
+  echo "You can specify ANDROID_HOME and ANDROID_NDK_HOME, currently I've these variables:"
+  echo ANDROID_HOME=$ANDROID_HOME
+  echo ANDROID_NDK_HOME=$ANDROID_NDK_HOME
 fi
 
 android_sdk_path=$1
diff --git a/setup_opencv.sh b/setup_opencv.sh
old mode 100644
new mode 100755