message: Also install libssl-dev to make pip/py3.6 work properly.
diff: @@ -48,6 +48,7 @@ apt-get install -y --no-install-recommends \
  git \
  libcurl4-openssl-dev \
  libtool \
  + libssl-dev \
  mlocate \
  openjdk-8-jdk \
  openjdk-8-jre-headless \
  