Add fedora-eln manifest for centos-eln

Add MANIFEST=fedora-eln: minimal-plus base for Enterprise Linux Next (ELN),
using distro fedora and ELN repos at build time. The resulting image is
published as centos-eln.

Ref: https://github.com/fedora-eln/eln/issues/214
Co-authored-by: Cursor <cursoragent@cursor.com>

README.md

@@ -47,6 +47,8 @@ interface, but may be used by other images in Fedora.
 
 **standard** inherits from **minimal-plus** and **minimal-plus** in turn inherit from **minimal**.
 
+- **eln** (manifest `fedora-eln`): Minimal-plus base image for Enterprise Linux Next (ELN). Uses distro `fedora` and inherits from minimal-plus; built with ELN repos. The image produced by this manifest is published as **centos-eln**.
+
 All non-trivial changes to **minimal** and **minimal-plus** should be ACKed by at least
 one stakeholder of each Fedora variant WGs.
 

eln.yaml

@@ -0,0 +1,3 @@
+include:
+  - fedora-includes/eln.yaml
+  - eln/manifest.yaml

eln/manifest.yaml

@@ -0,0 +1,8 @@
+metadata:
+  summary: |
+    Minimal-plus bootc base image for Enterprise Linux Next (ELN).
+    This manifest is the source for the image published as centos-eln.
+    ELN is the Fedora package set (rawhide sources, ELN buildroot/compose).
+
+include:
+  - ../minimal-plus/manifest.yaml

fedora-eln.yaml

@@ -0,0 +1,3 @@
+include:
+  - fedora-includes/eln.yaml
+  - eln/manifest.yaml

fedora-includes/eln.yaml

@@ -0,0 +1,7 @@
+# ELN uses the same distro variable as Fedora: ELN is a compose of Fedora
+# Rawhide sources (see docs.fedoraproject.org/en-US/eln/). Repos come from
+# REPOS_IMAGE at build time; we do not add fedora-repos-archive here.
+variables:
+  distro: "fedora"
+
+packages: []

install-manifests

@@ -4,7 +4,7 @@ set -xeuo pipefail
 # into their installed location.
 manifestdir=${1:-/usr/share/doc/bootc-base-imagectl/manifests}
 mkdir -p "$manifestdir/"
-for image in minimal standard minimal-plus iot; do
+for image in minimal standard minimal-plus iot eln; do
     # Embed the generic defaults
     cp -a $image $manifestdir/
     # And the top-level Fedora-specific manifests