docker-deb-builder/Dockerfile-ubuntu-20.04

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FROM ubuntu:20.04
ARG DEBIAN_FRONTEND=noninteractive
RUN set -ex \
&& sed -i -- 's/# deb-src/deb-src/g' /etc/apt/sources.list \
&& apt-get update \
&& apt-get install -y --no-install-recommends \
build-essential \
cdbs \
devscripts \
equivs \
fakeroot \
&& apt-get clean \
&& rm -rf /tmp/* /var/tmp/*