Document how to override `exclude-packages`

[realnedsanders]

I'd like to build fcos with python3 installed so that the system is able to be managed via ansible.
I'm following the established pattern of including this repo as a git submodule in my own custom-coreos-config repo.

Python3 is listed under exclude-packages in manifests/fedora-coreos.yaml.
Currently the only way I can see to achieve my goal is to modify manifests/fedora-coreos.yaml, or to maintain my own manifest.yaml and manifests/fedora-coreos.yaml.

There has to be a better way, I'm just not able to find the documentation to support it.

[dustymabe]

I'd recommend doing a derived container build and then you can do whatever you like in the container build and build your own boot media. See the docs in the custom-coreos-disk-images repo.

[Devqon]

I'd recommend doing a derived container build and then you can do whatever you like in the container build and build your own boot media. See the docs in the custom-coreos-disk-images repo.

Thanks for your reply. But doesn't that still require some 'hacks' to manipulate the exluded packages from the fedora-coreos.yaml? So still some error-prone things like the sed-approach we do?

The question is basically; What is the recommended approach to customize these things, without breaking our infrastructure when a change is made in fedora's manifest files?