.github(Fedora): Update fedora release versions to 38 and 39

The versions 36 and 37 were no longer supported.
This commit also adds a script to generate the release-version specific
files so that it's easier to maintain the target release versions.

.github/containers/fedora36/Dockerfile → .github/containers/fedora-template/Dockerfile

@@ -1,4 +1,4 @@
-FROM fedora:36
+FROM fedora:%releasever%
 
 RUN dnf install -y rpm-build python3-dnf-plugins-core && dnf clean all
 

.github/containers/fedora-template/build.sh

@@ -0,0 +1,4 @@
+#! /bin/bash
+set -ex
+.github/containers/fedora-common/build.sh obs-plugin-build/fedora%releasever% fedora%releasever%-rpmbuild
+echo 'FILE_NAME=fedora%releasever%-rpmbuild/*RPMS/**/*.rpm' >> $GITHUB_ENV

.github/workflows/docker-build.yml

@@ -24,8 +24,8 @@ jobs:
       fail-fast: false
       matrix:
         target:
-          - fedora36
-          - fedora37
+          - fedora38
+          - fedora39
     defaults:
       run:
         shell: bash
@@ -39,6 +39,12 @@ jobs:
           fetch-depth: 0
           submodules: recursive
 
+      - name: Generate container directory
+        run: |
+          cp -a .github/containers/fedora-template .github/containers/$target
+          releasever="$(cut -b 7- <<< "$target")"
+          sed -i "s/%releasever%/$releasever/g" .github/containers/$target/*
+
       - name: Restore docker from cache
         id: docker-cache
         uses: actions/cache/restore@v4