====== Optimization ======

===== ordering =====

Put frequently changed commands at end

===== apt =====

<code bash>
RUN apt-get install -y --no-install-recommends &&
unzip \
wget && \
rm -rf /var/lib/apt-lists/* && \
apt-get purge --auto-remove && \
apt-get clean

</code>

===== multistage =====

Use intermediate container to build some artifact and copy only ready artifact to final image.