Initial changes for experimental branch with bootc

This implements coreos/fedora-coreos-tracker#1446

fedora-copr-bootc.repo

@@ -0,0 +1,10 @@
+[bootc-fedora]
+name=Copr repo for bootc owned by rhcontainerbot
+baseurl=https://download.copr.fedorainfracloud.org/results/rhcontainerbot/bootc/fedora-$releasever-$basearch/
+type=rpm-md
+skip_if_unavailable=True
+gpgcheck=1
+gpgkey=https://download.copr.fedorainfracloud.org/results/rhcontainerbot/bootc/pubkey.gpg
+repo_gpgcheck=0
+enabled=1
+enabled_metadata=1

image.yaml

@@ -2,3 +2,6 @@
 # similarly to manifest.yaml. Unlike image-base.yaml, which is shared by all
 # streams.
 include: image-base.yaml
+
+deploy-via-container: true
+container-imgref: ostree-remote-registry:fedora:quay.io/fedora/fedora-coreos:experimental

manifest.yaml

@@ -1,7 +1,10 @@
 variables:
-  stream: stable
+  stream: experimental
+  # At the current time, this is only kind of true.
   prod: true
 
 releasever: 38
 
-include: manifests/fedora-coreos.yaml
+include:
+  - manifests/fedora-coreos.yaml
+  - manifests/bootc.yaml

manifests/bootc.yaml

@@ -0,0 +1,7 @@
+# This implements https://github.com/coreos/fedora-coreos-tracker/issues/1446
+
+repos:
+  - bootc-fedora
+
+packages:
+    - bootc