repro: Add missing Dockerfiles

contrib/reprobuild/Dockerfile.bionic

@@ -0,0 +1,42 @@
+FROM bionic
+
+ENV TZ=UTC
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
+
+RUN sed -i '/updates/d' /etc/apt/sources.list && \
+    sed -i '/security/d' /etc/apt/sources.list
+
+RUN apt-get update \
+	&& apt-get install -y --no-install-recommends \
+      ca-certificates \
+	sudo \
+	build-essential \
+	libsodium23 \
+	python3-setuptools \
+	libpq-dev \
+	git \
+	file \
+	autoconf \
+	debianutils \
+	gettext \
+	zip \
+	unzip \
+	wget
+
+RUN wget https://bootstrap.pypa.io/get-pip.py -O /tmp/get-pip.py && python3 /tmp/get-pip.py \
+	&& rm /tmp/get-pip.py \
+	&& pip install mrkd mako
+
+RUN mkdir /build
+WORKDIR /build
+
+CMD git clone /repo /build \
+	&& tools/build-release.sh zipfile \
+	&& mkdir -p /repro \
+	&& cd /repro \
+	&& unzip /build/release/*.zip \
+	&& cd clightning* \
+	&& tools/repro-build.sh \
+	&& cp *.xz /build/release/* /repo/release/ \
+	&& cd /repo/release \
+	&& sha256sum *

contrib/reprobuild/Dockerfile.focal

@@ -0,0 +1,44 @@
+FROM focal
+
+ENV TZ=UTC
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
+
+RUN sed -i '/updates/d' /etc/apt/sources.list && \
+    sed -i '/security/d' /etc/apt/sources.list
+
+RUN apt-get update \
+	&& apt-get install -y --no-install-recommends \
+	autoconf \
+	build-essential \
+	ca-certificates \
+	file \
+	gettext \
+	git \
+	libgmp-dev \
+	libpq-dev \
+	libsodium23 \
+	libtool \
+	m4 \
+	python3-setuptools \
+	sudo \
+	unzip \
+	wget \
+	zip
+
+RUN wget https://bootstrap.pypa.io/get-pip.py -O /tmp/get-pip.py && python3 /tmp/get-pip.py \
+	&& rm /tmp/get-pip.py \
+	&& pip install mrkd mako
+
+RUN mkdir /build
+WORKDIR /build
+
+CMD git clone /repo /build \
+	&& tools/build-release.sh zipfile \
+	&& mkdir -p /repro \
+	&& cd /repro \
+	&& unzip /build/release/*.zip \
+	&& cd clightning* \
+	&& tools/repro-build.sh \
+	&& cp *.xz /build/release/* /repo/release/ \
+	&& cd /repo/release/ \
+	&& sha256sum *