message: chore(ci): fix gnu linux build
  Apparently Debian 7 has no pip3 package. So let's install it using get-pip script
diff: @@ -80,6 +80,15 @@ ENV RUSTUP_HOME="${HOME}/.rustup"
  ENV NODE_DIR="/opt/node"
  ENV PATH="/usr/lib/llvm-${CLANG_VERSION}/bin:${NODE_DIR}/bin:${HOME}/.local/bin:${HOME}/.cargo/bin:${HOME}/.cargo/install/bin:${PATH}"
  +# Install Python dependencies
  +RUN set -euxo pipefail >/dev/null \
  +&& if [ "$(lsb_release -cs)" == "wheezy" ]; then \
  + curl -fsSL https://bootstrap.pypa.io/pip/3.2/get-pip.py | python3 \
  + ;fi
  +
  +RUN set -euxo pipefail >/dev/null \
  +&& pip3 install --user --upgrade cram
  +
  # Install dasel, a tool to query TOML files
  RUN set -euxo pipefail >/dev/null \
  && curl -fsSL "https://github.com/TomWright/dasel/releases/download/v${DASEL_VERSION}/dasel_linux_amd64" -o "/usr/bin/dasel" \
  @@ -193,9 +202,6 @@ RUN set -euxo pipefail >/dev/null \
  && rustup completions bash cargo >> ~/.bash_completion \
  && echo "source ~/.bash_completion" >> ~/.bashrc
  -RUN set -euxo pipefail >/dev/null \
  -&& pip3 install --user --upgrade cram
  -
  USER ${USER}
  WORKDIR ${HOME}/src
  