Custom Ubuntu Core image builder

This is command line tool for building Ubuntu Core images. It does follow ubuntu-image syntax. In addition, it supports building images in formats for various flash tools and SoCs.

Supported flash tools, SoCs:

• NXP: uuu flash tool
• Qualcomm: fastboot, qdl, QFIL
• Mediatek: native flash tool, fastboot
• Ambarella: AmbaUSB

Standard features:

• -h, --help Show this help message and exit"
• --snap Install an extra snap, the snap argument can include additional information about the track|risk channel/branch with the following syntax: =<track|channel/branch> Examples: --snap go=1.14|stable --snap avahi.snap
• --revisions Specify a subuntu-core-image.revisions file referencing the exact revisions of the provided snaps which should be installed. seeds.manifest and ubuntu-core-image.revisions are auto-generated for each build.
• --preseed Create pressed image. The tool has to run as root.
• --preseed-sign-key Name of the key to use to sign preseed assertion.
• --validation Control of the validation sets, choose 'ignore' or 'enforce'.
• --preseed-sysfs-overlay Overlay of sysfs to be used when building presseded image. This is required when building images with specific hw interfaces.
• --auto-import-assertion Auto import assertion file to be included in the root of the main writable partition. This assertion is imported once the system is fully seeded. A passed file does not need to have the correct file name; it will be renamed.
• --build-raw Build raw disk images, instead of sparse ones.
• -O, --output-dir Output directory.
• -w, --workdir Working directory.
• -d, --debug Print debug
• -dd Print verbose debugs
• -v, --version Pring version info
• --disk-info File to be used as .disk/info on the image's rootfs. This file can contain useful information about the target image, like image identification data, system name, build timestamp, etc.

Ubuntu Core 16/18 support

Support for Ubuntu Core 16/18 is no more supported by uc-image.