to date RUN echo "deb http://archive.ubuntu.com/ubuntu precise main universe" > /etc/apt/sources.list RUN apt-get update # install memcached RUN apt-get install -y memcached # run as user daemon (memcached doesn't allow to run as root) USER daemon # expose memcached port EXPOSE 11211 # Launch memcached when launching the container ENTRYPOINT ["memcached"]