FROM ubuntu:18.04
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    gcc libc6-dev ca-certificates \
    gcc-arm-linux-gnueabihf libc6-dev-armhf-cross qemu-user-static
ENV CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_LINKER=arm-linux-gnueabihf-gcc \
    CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_RUNNER=qemu-arm-static \
    QEMU_LD_PREFIX=/usr/arm-linux-gnueabihf \
    RUST_TEST_THREADS=1