3/30/2024 0 Comments Qemu arm$ docker run -v /usr/bin/qemu-arm-static:/usr/bin/qemu-arm-static -rm -ti Building ARM containers This is as easy as mount-binding it in the container invocation and voila! We are running an armhf container in our x86 machine. Now, we only need to place the qemu-arm-static interpreter inside the container. If you haven’t yet, install QEMU user mode, by default it will install also binfmt_misc support. At the end of the day, containers are chroots in steroids, and they also share kernel with the host so all the basic mechanics remain the same. Now that we have that covered, nothing prevents us from applying that to Docker containers. We ended up running a whole ARM root filesystem transparently in a chroot jail using QEMU user mode and binfmt_misc support. We already covered how Linux executes files and how to run ARM binaries “natively” in Linux in the last two posts.
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