Snapcraft can be installed with sudo snap install snapcraft -classic, see Snapcraft overview for further details, and visit Create a developer account if you don’t yet have an account.
To build a custom image, first use the snapcraft command to login to the Snap Store: $ snapcraft login Some very basic knowledge of command line use, know how to edit files.An SSH public key associated with your Snap Store account.See Create a developer account for details. A Snap Store account to register your authority keys.You can’t do this on an Ubuntu Core device directly as creating your image can take quite some disk spaces. Compose and build a custom image using the ubuntu-image command.Create a model assertion for your target device.Different fundamental snap notions on the board, like gadget, kernel and core snap.This document will walk you through all the steps to build an image for an x86 device, but the same instructions will work for other platforms. We are going to create an image of the latest Ubuntu Core release, UC20, first by generating our own authority keys, then making the snap store aware of them, then creating and signing a model assertion before building the image. Customisation options include configuration for both hardware and software, specific kernels, and which snap packages to pre-install. Make your own device image with some snap preinstalled or additional functionalities!īuilding a bespoke image for a supported platform enables an Ubuntu Core device to be customised at the point of deployment. Create your own image of Ubuntu Core 20, the latest release of our snap-based operating system.
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