FROM ruby:2.4

WORKDIR /home/qa

RUN wget -q https://download.docker.com/linux/static/stable/x86_64/docker-18.06.1-ce.tgz && \
    tar -zxf docker-18.06.1-ce.tgz && mv docker/docker /usr/local/bin/docker && \
    echo "2d92728714d794f78619785a2c638b58b0b15e60b340de51886bf6d3730f31f0  /usr/local/bin/docker" | sha256sum -c - && \
    rm docker-18.06.1-ce.tgz