Update automatically your `/etc/hosts` to access running containers.
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FROM iamluc/composer
ADD . /usr/local/src/docker-hostmanager
RUN composer install --no-interaction --no-dev --prefer-dist --working-dir=/usr/local/src/docker-hostmanager \
&& ln -s /usr/local/src/docker-hostmanager/bin/docker-hostmanager /usr/local/bin/docker-hostmanager
ENV HOSTS_FILE=/hosts
ENTRYPOINT ["/usr/local/bin/docker-hostmanager"]