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