Fedora iot-bootable-container requires a bootc/install config

[achilleas-k]

The new bootc-image-builder now uses bootc install to-filesystem, which requires the container define a config for the tool to read.

ERROR Installing to filesystem: Loading configuration: No bootc/install config found; this operating system must define a default configuration to be installable
Traceback (most recent call last):
  File "/run/osbuild/bin/org.osbuild.bootc.install-to-filesystem", line 53, in <module>
    r = main(args["options"], args["inputs"], args["paths"])
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/run/osbuild/bin/org.osbuild.bootc.install-to-filesystem", line 48, in main
    subprocess.run(pargs, env=env, check=True)
  File "/usr/lib64/python3.12/subprocess.py", line 571, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['bootc', 'install', 'to-filesystem', '--source-imgref', 'containers-storage:[overlay@/run/osbuild/containers/storage+/run/containers/storage]401ce5fe69f79274dff5db0acc95f23859b593d1f1187a46961bc19b40bdda74', '--skip-fetch-check', '--generic-image', '--karg', 'rw', '--karg', 'console=tty0', '--karg', 'console=ttyS0', '--target-imgref', 'registry.gitlab.com/redhat/services/products/image-builder/ci/images/iot-bootable-container:fedora-39-aarch64-4b3675c1ce01f900bfcadaa5d4cf9a021c063b024ad728b0631f64f048437882', '/run/osbuild/mounts']' returned non-zero exit status 1.

For example, the quay.io/centos-bootc/fedora-bootc:eln container contains the file /usr/lib/bootc/install/20-rhel.toml with the following content:

root-fs-type = "xfs"

Refs:

• Build failures from Update bootc-image-builder ref to latest #618
  • https://gitlab.com/redhat/services/products/image-builder/ci/images/-/jobs/6674381430
• Config docs: https://github.com/containers/bootc/blob/36e70dae9bd3bac91f24c68f1661e279c0ee0ff2/docs/src/man-md/bootc-install-config.md

[cgwalters]

This will be fixed by containers/bootc#480

[achilleas-k]

Thanks. Still, it'd be nice to be able to write a config for the bootable containers we build.
osbuild/osbuild#1747

[achilleas-k]

Fixed by #636