# How to generate a yocto image with docker engine? **URL:** \ **Category:** General Discussions\ **Created:** [April 16, 2020, 4:32pm UTC](https://hub.mender.io/t/how-to-generate-a-yocto-image-with-docker-engine/1800 "2020-04-16T16:32:24Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![jchdel](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/jchdel/32/681_2.png) [@jchdel](https://hub.mender.io/u/jchdel)\ **Post date:** [April 16, 2020, 4:32pm UTC](https://hub.mender.io/t/how-to-generate-a-yocto-image-with-docker-engine/1800/1 "2020-04-16T16:32:25Z")
Hi, I’m trying to run a mender image build with yocto that will run docker containers. I do not find in the doc how to achieve this and using docker-artifact-gen then uploading the mender artifact and deploying it leads to errors in logs because docker engine is not present. I suppose it is a matter of adding the right meta-layer to the build but how can I find which one and where to point sources to? thanks! Jean-Charles ---
**Author:** ![eystein](https://avatars.discourse-cdn.com/v4/letter/e/e5b9ba/32.png) [@eystein](https://hub.mender.io/u/eystein)\ **Post date:** [April 16, 2020, 8:27pm UTC](https://hub.mender.io/t/how-to-generate-a-yocto-image-with-docker-engine/1800/2 "2020-04-16T20:27:11Z")
Hi @jchdel! Many people find Yocto a bit challening in the beginning. So even though this is not strictly related to Mender, we do have a forum category with taking the first steps with Yocto here: [https://hub.mender.io/c/tutorials/yocto-project](https://hub.mender.io/c/tutorials/yocto-project) In particular, this might cover what you are looking for: [https://hub.mender.io/t/how-to-install-packages-in-yocto-project](https://hub.mender.io/t/how-to-install-packages-in-yocto-project) Let us know how it works out! ---
**Author:** ![drewmoseley](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/drewmoseley/32/47_2.png) [@drewmoseley](https://hub.mender.io/u/drewmoseley)\ **Post date:** [April 16, 2020, 8:27pm UTC](https://hub.mender.io/t/how-to-generate-a-yocto-image-with-docker-engine/1800/3 "2020-04-16T20:27:41Z")
Hi @jchdel, Welcome to Mender hub. You will need the [meta-virtualization layer](https://git.yoctoproject.org/cgit/cgit.cgi/meta-virtualization/) as a start. I don’t know the exact configuration changes needed but the docs in that layer should help. Drew ---
**Author:** ![jchdel](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/jchdel/32/681_2.png) [@jchdel](https://hub.mender.io/u/jchdel)\ **Post date:** [April 17, 2020, 2:23am UTC](https://hub.mender.io/t/how-to-generate-a-yocto-image-with-docker-engine/1800/4 "2020-04-17T02:23:48Z")
Thanks for the links and pointers. After quite a bit of trials and mostly errors… I’m currently building with ``` BBLAYERS ?= " \ ${TOPDIR}/../sources/poky/meta \ ${TOPDIR}/../sources/poky/meta-poky \ ${TOPDIR}/../sources/poky/meta-yocto-bsp \ ${TOPDIR}/../sources/meta-mender/meta-mender-core \ ${TOPDIR}/../sources/meta-mender/meta-mender-demo \ ${TOPDIR}/../sources/meta-mender/meta-mender-qemu \ ${TOPDIR}/../../meta-openembedded/meta-oe \ ${TOPDIR}/../../meta-openembedded/meta-python \ ${TOPDIR}/../../meta-openembedded/meta-networking \ ${TOPDIR}/../../meta-openembedded/meta-filesystems \ ${TOPDIR}/../../meta-virtualization \ " echo 'IMAGE_INSTALL_append = " docker"' >> conf/local.conf # also enhance storage size in conf/local.conf bitbake -c menuconfig virtual/kernel bitbake core-image-base ``` docker is installed but doesn’t run ☹ br\_netfilter kernel module is not present… ---
**Author:** ![mirzak](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/mirzak/32/2056_2.png) [@mirzak](https://hub.mender.io/u/mirzak)\ **Post date:** [April 17, 2020, 6:24am UTC](https://hub.mender.io/t/how-to-generate-a-yocto-image-with-docker-engine/1800/5 "2020-04-17T06:24:19Z")
Docker has many Linux kernel dependencies and this can be quite frustrating to get right. There is a helper script that you can run on your device, ```auto wget https://github.com/moby/moby/raw/master/contrib/check-config.sh chmod +x check-config.sh ./check-config.sh ``` This will tell you which kernel configs you are missing and need to enable. Further make sure that you have `kernel-modules` installed as part of your image ---
**Author:** ![jchdel](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/jchdel/32/681_2.png) [@jchdel](https://hub.mender.io/u/jchdel)\ **Post date:** [April 17, 2020, 8:30am UTC](https://hub.mender.io/t/how-to-generate-a-yocto-image-with-docker-engine/1800/6 "2020-04-17T08:30:07Z")
Thanks for the hints; I finally manage to make docker run on mender image. For memory and documentation, on top of above bblayers.conf, local.conf had following changes from default: MENDER\_SERVER\_URL = “[https://hosted.mender.io](https://hosted.mender.io)” MENDER\_TENANT\_TOKEN = “\*\*\*\*\*” MENDER\_ARTIFACT\_NAME = “release-docker-1” MENDER\_STORAGE\_TOTAL\_SIZE\_MB = “16384” MENDER\_BOOT\_PART\_SIZE\_MB = “32” MENDER\_DATA\_PART\_SIZE\_MB = “8192” DISTRO\_FEATURES\_append = " virtualization" IMAGE\_INSTALL\_append = " docker" CORE\_IMAGE\_EXTRA\_INSTALL += " kernel-modules" and I had to add aufs module to kernel with bitbake -c menuconfig virtual/kernel before running bitbake core-image-base ---
**Author:** ![robert.berger](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/robert.berger/32/91_2.png) [@robert.berger](https://hub.mender.io/u/robert.berger)\ **Post date:** [April 20, 2020, 8:30pm UTC](https://hub.mender.io/t/how-to-generate-a-yocto-image-with-docker-engine/1800/7 "2020-04-20T20:30:11Z")
On which board do you run docker? What is your kernel version? What is your yocto version? I am asking because I have it running without aufs. btrfs shouls works as well and on a recent version even ext4 I believe. Do you plan to create docker images as well with yocto? ---
**Author:** ![jchdel](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/jchdel/32/681_2.png) [@jchdel](https://hub.mender.io/u/jchdel)\ **Post date:** [April 22, 2020, 6:22am UTC](https://hub.mender.io/t/how-to-generate-a-yocto-image-with-docker-engine/1800/8 "2020-04-22T06:22:37Z")
@robert.berger, you are right aufs is not needed. I run currently my setup on two flavors of orange-pi-pc boards, a genericx86-64 board and a qemux86-64. It runs poky warrior 2.7.3 with Linux version 4.19.63. current plan is to have edge devices to pull docker images from a private repo based upon docker update module. Not sure yet if it will be the right way to go…