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+#
+# Docker multiarch cross-compiler target
+#
+# This docker target is builds on Debian Ports cross compiler targets
+# to build distro with a selection of cross compilers for building test binaries.
+#
+# On its own you can't build much but the docker-foo-cross targets
+# build on top of the base debian image.
+#
+FROM debian:unstable
+
+MAINTAINER Philippe Mathieu-Daudé <f4bug@amsat.org>
+
+RUN echo "deb [arch=amd64] http://deb.debian.org/debian unstable main" > /etc/apt/sources.list
+
+# Duplicate deb line as deb-src
+RUN cat /etc/apt/sources.list | sed -ne "s/^deb\ \(\[.*\]\ \)\?\(.*\)/deb-src \2/p" >> /etc/apt/sources.list
+
+# Setup some basic tools we need
+RUN apt-get update && \
+ DEBIAN_FRONTEND=noninteractive apt-get install -yy eatmydata
+RUN DEBIAN_FRONTEND=noninteractive eatmydata \
+ apt-get install -y --no-install-recommends \
+ bison \
+ build-essential \
+ ca-certificates \
+ clang \
+ debian-ports-archive-keyring \
+ flex \
+ git \
+ pkg-config \
+ psmisc \
+ python \
+ texinfo \
+ $(apt-get -s build-dep qemu | egrep ^Inst | fgrep '[all]' | cut -d\ -f2)