Update boost version and add new builder buildspec

Docker/builder/Dockerfile

@@ -12,12 +12,12 @@ RUN wget --no-check-certificate https://cmake.org/files/v3.12/cmake-3.12.0-Linux
     && bash cmake-3.12.0-Linux-x86_64.sh --prefix=/usr/local --exclude-subdir --skip-license \
     && rm cmake-3.12.0-Linux-x86_64.sh
 
-RUN wget https://dl.bintray.com/boostorg/release/1.67.0/source/boost_1_67_0.tar.bz2 -O - | tar -xj \
-    && cd boost_1_67_0 \
+RUN wget https://dl.bintray.com/boostorg/release/1.68.0/source/boost_1_68_0.tar.bz2 -O - | tar -xj \
+    && cd boost_1_68_0 \
     && ./bootstrap.sh --prefix=/usr/local \
     && ./b2 -d0 -j$(nproc) --with-thread --with-date_time --with-system --with-filesystem --with-program_options \
        --with-signals --with-serialization --with-chrono --with-test --with-context --with-locale --with-coroutine --with-iostreams toolset=gcc link=shared install \
-    && cd .. && rm -rf boost_1_67_0
+    && cd .. && rm -rf boost_1_68_0
 
 RUN git clone --depth 1 git://github.com/cryptonomex/secp256k1-zkp \
     && cd secp256k1-zkp \

buildspec-evt-builder.yml

@@ -0,0 +1,21 @@
+version: 0.2
+
+env:
+  parameter-store:
+    LOGIN_USERID: "docker-userid"
+    LOGIN_PASSWORD: "docker-password"
+    BUILD_JOBS: "docker-build-jobs"
+
+phases:
+  pre_build:
+    commands:
+      - echo Logging into Docker Hub...
+      - docker login -u $LOGIN_USERID -p $LOGIN_PASSWORD
+  build:
+    commands:
+      - echo Start building latest evt builder...
+      - cd Docker/builder && docker build . -t everitoken/builder:latest --build-arg bjobs=$BUILD_JOBS
+  post_build:
+    commands:
+      - echo Publish to Docker Hub...
+      - docker push everitoken/builder:latest