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diff --git a/tests/docker/dockerfiles/debian-hexagon-cross.docker b/tests/docker/dockerfiles/debian-hexagon-cross.docker
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+++ b/tests/docker/dockerfiles/debian-hexagon-cross.docker
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+#
+# Docker Hexagon cross-compiler target
+#
+# This docker target is used for building hexagon tests. As it also
+# needs to be able to build QEMU itself in CI we include it's
+# build-deps. It is also a "stand-alone" image so as not to be
+# triggered by re-builds on other base images given it takes a long
+# time to build.
+#
+FROM qemu/debian10
+
+# Install common build utilities
+RUN apt update && \
+    DEBIAN_FRONTEND=noninteractive apt install -yy eatmydata && \
+    DEBIAN_FRONTEND=noninteractive eatmydata \
+    apt install -y --no-install-recommends \
+        bison \
+        cmake \
+        flex \
+        lld \
+        rsync \
+        wget
+
+ENV TOOLCHAIN_INSTALL /usr/local
+ENV ROOTFS /usr/local
+
+ENV LLVM_URL https://github.com/llvm/llvm-project/archive/bfcd21876adc3498065e4da92799f613e730d475.tar.gz
+ENV MUSL_URL https://github.com/quic/musl/archive/aff74b395fbf59cd7e93b3691905aa1af6c0778c.tar.gz
+ENV LINUX_URL https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.6.18.tar.xz
+
+ADD build-toolchain.sh /root/hexagon-toolchain/build-toolchain.sh
+
+RUN cd /root/hexagon-toolchain && ./build-toolchain.sh
+
+FROM debian:buster-slim
+# Duplicate deb line as deb-src
+RUN cat /etc/apt/sources.list | sed "s/^deb\ /deb-src /" >> /etc/apt/sources.list
+# Install QEMU build deps for use in CI
+RUN apt update && \
+    DEBIAN_FRONTEND=noninteractive apt install -yy eatmydata && \
+    DEBIAN_FRONTEND=noninteractive eatmydata apt install -yy git ninja-build && \
+    DEBIAN_FRONTEND=noninteractive eatmydata \
+    apt build-dep -yy --arch-only qemu
+COPY --from=0 /usr/local /usr/local
+ENV PATH $PATH:/usr/local/bin/