message: build_system: sort ubuntu deps alphabetically
diff: @@ -11,24 +11,23 @@ ENV DEBIAN_FRONTEND noninteractive
  RUN apt-get update \
  && apt-get -y --quiet --no-install-recommends install \
  - cmake \
  + autoconf \
  + automake \
  + autotools-dev \
  build-essential \
  + ca-certificates \
  colordiff \
  + cmake \
  + doxygen \
  git \
  libcurl4-openssl-dev \
  - doxygen \
  - autoconf \
  + libltdl-dev \
  + libtinyxml2-dev \
  libtool \
  - wget \
  - ca-certificates \
  - autoconf \
  - automake \
  python \
  - autotools-dev \
  - libltdl-dev \
  python-pip \
  - libtinyxml2-dev \
  ruby-dev \
  + wget \
  && apt-get -y autoremove \
  && apt-get clean autoclean \
  && rm -rf /var/lib/apt/lists/{apt,dpkg,cache,log} /tmp/* /var/tmp/*
  