diff --git a/Docker/Dockerfile b/Docker/Dockerfile
index 4b30514e335..0a37e7c2052 100644
--- a/Docker/Dockerfile
+++ b/Docker/Dockerfile
@@ -1,20 +1,27 @@
-FROM ubuntu:xenial-20170619
+FROM ubuntu
 MAINTAINER xiaobo (peterwillcn@gmail.com)
 
 RUN echo 'APT::Install-Recommends 0;' >> /etc/apt/apt.conf.d/01norecommends \
  && echo 'APT::Install-Suggests 0;' >> /etc/apt/apt.conf.d/01norecommends \
  && apt-get update \
- && DEBIAN_FRONTEND=noninteractive apt-get install -y vim sudo wget htop iftop net-tools ca-certificates unzip
+ && DEBIAN_FRONTEND=noninteractive apt-get install -y sudo wget net-tools ca-certificates unzip
 
 RUN echo "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-4.0 main" >> /etc/apt/sources.list.d/llvm.list \
- && echo "deb-src http://apt.llvm.org/xenial/ llvm-toolchain-xenial-4.0 main" >> /etc/apt/sources.list.d/llvm.list \
  && wget -O - http://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add - \
  && apt-get update \
- && DEBIAN_FRONTEND=noninteractive apt-get install -y git-core automake autoconf libtool make cmake build-essential automake pkg-config libtool \
-    mpi-default-dev libicu-dev python-dev python3-dev libbz2-dev zlib1g-dev clang libssl-dev \
+ && DEBIAN_FRONTEND=noninteractive apt-get install -y git-core automake autoconf libtool build-essential pkg-config libtool \
+    mpi-default-dev libicu-dev python-dev python3-dev libbz2-dev zlib1g-dev libssl-dev \
     clang-4.0 lldb-4.0 lld-4.0 \
  && rm -rf /var/lib/apt/lists/*
 
+RUN update-alternatives --install /usr/bin/clang clang /usr/lib/llvm-4.0/bin/clang 400 \
+  && update-alternatives --install /usr/bin/clang++ clang++ /usr/lib/llvm-4.0/bin/clang++ 400
+
+RUN cd /tmp && wget https://cmake.org/files/v3.9/cmake-3.9.0-Linux-x86_64.sh \
+   && mkdir /opt/cmake && chmod +x /tmp/cmake-3.9.0-Linux-x86_64.sh \
+   && sh /tmp/cmake-3.9.0-Linux-x86_64.sh --prefix=/opt/cmake --skip-license \
+   && ln -s /opt/cmake/bin/cmake /usr/local/bin/cmake
+
 RUN cd /tmp && wget https://dl.bintray.com/boostorg/release/1.64.0/source/boost_1_64_0.tar.gz \
   && tar zxf boost_1_64_0.tar.gz \
   && cd boost_1_64_0 \
@@ -23,17 +30,21 @@ RUN cd /tmp && wget https://dl.bintray.com/boostorg/release/1.64.0/source/boost_
   && ./b2 install --prefix=/usr \
   && rm -rf /tmp/boost_1_64_0*
 
-RUN update-alternatives --install /usr/bin/clang clang /usr/lib/llvm-4.0/bin/clang 400 \
-  && update-alternatives --install /usr/bin/clang++ clang++ /usr/lib/llvm-4.0/bin/clang++ 400
-
 RUN cd /tmp && git clone https://github.com/cryptonomex/secp256k1-zkp.git \
-  && tar zcf secp256k1-zkp.tgz secp256k1-zkp && cd secp256k1-zkp \
+  && cd secp256k1-zkp \
   && ./autogen.sh && ./configure && make && make install \
   && ldconfig && rm -rf /tmp/secp256k1-zkp*
 
+RUN cd /tmp && mkdir wasm-compiler && cd wasm-compiler \
+  && git clone --depth 1 --single-branch --branch release_40 https://github.com/llvm-mirror/llvm.git \
+  && cd llvm/tools && git clone --depth 1 --single-branch --branch release_40 https://github.com/llvm-mirror/clang.git \
+  && cd .. && mkdir build && cd build \
+  && cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX=/opt/wasm -DLLVM_TARGETS_TO_BUILD= -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly -DCMAKE_BUILD_TYPE=Release ../ \
+  && make -j$(nproc) install && rm -rf /tmp/wasm-compiler
+
 RUN cd /tmp && git clone https://github.com/EOSIO/eos.git --recursive \
-  && touch /tmp/eos/contracts/CMakeLists.txt && cd eos && mkdir build && cd build \
-  && cmake -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_STANDARD=14 -DCMAKE_INSTALL_PREFIX=/opt/eos ../ \
+  && cd eos && mkdir build && cd build \
+  && WASM_LLVM_CONFIG=/opt/wasm/bin/llvm-config cmake -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_COMPILER=clang -DCMAKE_INSTALL_PREFIX=/opt/eos ../ \
   && make -j$(nproc) && make install \
   && rm -rf /tmp/eos*
 
diff --git a/Docker/README.md b/Docker/README.md
index beb7be0f25b..5d5fe727ec2 100644
--- a/Docker/README.md
+++ b/Docker/README.md
@@ -10,12 +10,13 @@ Build eos images
 ```
 cd eos/Docker
 cp ../genesis.json .
-docker build -t eosio/eos .
+docker build --rm -t eosio/eos .
 ```
 
 Start docker
 
 ```
+sudo rm -rf /data/store/eos # options 
 sudo mkdir -p /data/store/eos
 docker-compose -f docker-compose.yml up
 ```
diff --git a/README.md b/README.md
index ea92b60c09a..a2bf186af27 100644
--- a/README.md
+++ b/README.md
@@ -92,12 +92,13 @@ Build eos images
 ```
 cd eos/Docker
 cp ../genesis.json .
-docker build -t eosio/eos .
+docker build --rm -t eosio/eos .
 ```
 
 Start docker
 
 ```
+sudo rm -rf /data/store/eos # options 
 sudo mkdir -p /data/store/eos
 docker-compose -f docker-compose.yml up
 ```
diff --git a/circle.yml b/circle.yml
new file mode 100644
index 00000000000..7efb088f0e3
--- /dev/null
+++ b/circle.yml
@@ -0,0 +1,13 @@
+machine:
+  services:
+    - docker
+
+dependencies:
+  override:
+    - cd ~/eos/Docker && docker build -t eosio/eos .
+
+test:
+  pre:
+    - sleep 5
+  override:
+    - docker run eosio/eos