FROM ubuntu:16.04 RUN apt-get update RUN apt-get install -y --no-install-recommends \ ca-certificates \ gcc \ gcc-arm-linux-gnueabihf \ libc6-dev \ libc6-dev-armhf-cross \ qemu-user-static ENV CARGO_TARGET_ARM_UNKNOWN_LINUX_GNUEABIHF_LINKER=arm-linux-gnueabihf-gcc \ QEMU_LD_PREFIX=/usr/arm-linux-gnueabihf \ RUST_TEST_THREADS=1