First draft hello world

.circleci/config.yml

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+---
+version: 2.1
+
+orbs:
+  slack: circleci/slack@3.4.1
+
+executors:
+  executor_med:  # 2cpu, 4G ram
+    docker:
+      - image: circleci/openjdk:11.0.4-jdk-stretch
+    resource_class: medium
+    working_directory: ~/project
+    environment:
+      JAVA_TOOL_OPTIONS: -Xmx2048m
+      GRADLE_OPTS: -Dorg.gradle.daemon=false -Dorg.gradle.parallel=true -Dorg.gradle.workers.max=2 -Xmx2048m
+
+  executor_large: # 4cpu, 8G ram
+    docker:
+      - image: circleci/openjdk:11.0.4-jdk-stretch
+    resource_class: large
+    working_directory: ~/project
+    environment:
+      JAVA_TOOL_OPTIONS: -Xmx4096m
+      GRADLE_OPTS: -Dorg.gradle.daemon=false -Dorg.gradle.parallel=true -Dorg.gradle.workers.max=4 -Xmx4096m
+
+  executor_machine: # 2cpu , 8G ram
+    machine:
+      image: ubuntu-1604:201903-01 #Ubuntu 16.04, docker 18.09.3, docker-compose 1.23.1
+      docker_layer_caching: true
+    working_directory: ~/project
+    environment:
+      JAVA_TOOL_OPTIONS: -Xmx4096m
+      GRADLE_OPTS: -Dorg.gradle.daemon=false -Dorg.gradle.parallel=true -Dorg.gradle.workers.max=2 -Xmx4096m
+
+commands:
+  prepare:
+    description: "Prepare"
+    steps:
+      - checkout
+      - restore_cache:
+          name: Restore cached gradle dependencies
+          keys:
+            - deps-{{ checksum "build.gradle" }}-{{ .Branch }}-{{ .Revision }}
+            - deps-{{ checksum "build.gradle" }}
+            - deps-
+
+  capture_test_results:
+    description: "Capture test results"
+    steps:
+      - run:
+          name: Gather test results
+          when: always
+          command: |
+            FILES=`find . -name test-results`
+            for FILE in $FILES
+            do
+              MODULE=`echo "$FILE" | sed -e 's@./\(.*\)/build/test-results@\1@'`
+              TARGET="build/test-results/$MODULE"
+              mkdir -p "$TARGET"
+              cp -rf ${FILE}/*/* "$TARGET"
+            done
+      - store_test_results:
+          path: build/test-results
+
+  notify:
+    description: "Notify Slack"
+    steps:
+      - slack/status:
+          fail_only: true
+          only_for_branches: 'master'
+
+jobs:
+  build:
+    executor: executor_large
+    steps:
+      - prepare
+      - run:
+          name: Build
+          command: |
+            ./gradlew --no-daemon --parallel build
+      - run:
+          name: Test
+          no_output_timeout: 20m
+          command: |
+            ./gradlew --no-daemon --parallel test
+      - run:
+          name: Integration Test
+          no_output_timeout: 20m
+          command: |
+            ./gradlew --no-daemon --parallel integrationTest --info
+      - notify      
+      - capture_test_results
+      - save_cache:
+          name: Caching gradle dependencies
+          key: deps-{{ checksum "build.gradle" }}-{{ .Branch }}-{{ .Revision }}
+          paths:
+            - .gradle
+            - ~/.gradle
+      - persist_to_workspace:
+          root: ~/project
+          paths:
+            - ./
+
+  acceptanceTests:
+    executor: executor_machine
+    steps:
+      - prepare
+      - run:
+          name: Install Packages - Java 11
+          command: |
+            sudo add-apt-repository -y ppa:openjdk-r/ppa
+            sudo apt update
+            sudo apt install -y openjdk-11-jdk
+            sudo update-java-alternatives -s java-1.11.0-openjdk-amd64
+      - run:
+          name: Acceptance Test
+          no_output_timeout: 20m
+          command: |
+            ./gradlew --no-daemon --parallel acceptanceTest
+      - notify            
+      - capture_test_results
+
+  buildDocker:
+    executor: executor_med
+    steps:
+      - prepare
+      - setup_remote_docker
+      - attach_workspace:
+          at: ~/project
+      - run:
+          name: hadoLint
+          command: |
+            docker run --rm -i hadolint/hadolint < docker/Dockerfile
+      - run:
+          name: build image
+          command: |
+            ./gradlew --no-daemon distDocker
+      - run:
+          name: test image
+          command: |
+            mkdir -p docker/reports
+            ./gradlew --no-daemon testDocker
+      - notify            
+
+  publish:
+    executor: executor_med
+    steps:
+      - prepare
+      - attach_workspace:
+          at: ~/project
+      - run:
+          name: Publish
+          command: |
+            ./gradlew --no-daemon --parallel bintrayUpload
+      - notify
+
+  publishDocker:
+    executor: executor_med
+    steps:
+      - prepare
+      - setup_remote_docker
+      - attach_workspace:
+          at: ~/project
+      - run:
+          name: Publish Docker
+          command: |
+            docker login --username "${DOCKER_USER}" --password "${DOCKER_PASSWORD}"
+            ./gradlew --no-daemon --parallel "-Pbranch=${CIRCLE_BRANCH}" dockerUpload
+      - notify
+
+workflows:
+  version: 2
+  default:
+    jobs:
+      - build
+      - acceptanceTests:
+          requires:
+            - build
+      - buildDocker:
+          requires:
+            - build
+      - publish:
+          filters:
+            branches:
+              only:
+                - master
+                - /^release-.*/
+          requires:
+            - build
+            - acceptanceTests
+      - publishDocker:
+          filters:
+            branches:
+              only:
+                - master
+                - /^release-.*/
+          requires:
+            - build
+            - acceptanceTests
+            - buildDocker

.gitignore

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+*.bak
+*.swp
+*.tmp
+*~.nib
+*.iml
+*.launch
+*.swp
+*.log
+.classpath
+.DS_Store
+.externalToolBuilders/
+.gradle/
+.idea/
+.loadpath
+.metadata
+.prefs
+.project
+.recommenders/
+.settings
+.springBeans
+.vertx
+bin/
+local.properties
+target/
+tmp/
+build/
+out/
+docker/reports/*

CLA.md

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+Sign the CLA
+=============
+
+This page is the step-by-step guide to signing the Consensys AG
+Individual Contributor License Agreement. 
+
+1. First and foremost, read [the current version of the CLA]. 
+   It is written to be as close to plain English as possible.
+
+2. Make an account on [GitHub] if you don't already have one.
+
+3. After creating your first pull request, you will see a merge
+   pre-requisite requiring to you read and sign the CLA.
+
+If you have any questions, you can reach us on [Gitter].
+
+[GitHub]: https://github.com/
+[the current version of the CLA]: https://gist.github.com/rojotek/978b48a5e8b68836856a8961d6887992