One RPM per Fedora release, 43 and 44, each with its own LibRaw (12.16)

scripts/distro/fedora/Dockerfile

@@ -1,6 +1,8 @@
-# Fedora 43, the oldest still supported; HEVC from RPM Fusion.
-FROM fedora:43
-RUN dnf install -y https://mirrors.rpmfusion.org/free/fedora/rpmfusion-free-release-43.noarch.rpm \
+# A supported Fedora, 43 unless named; HEVC from RPM Fusion.
+ARG RELEASE=43
+FROM fedora:${RELEASE}
+ARG RELEASE
+RUN dnf install -y https://mirrors.rpmfusion.org/free/fedora/rpmfusion-free-release-${RELEASE}.noarch.rpm \
     && dnf install -y gcc-c++ cmake ninja-build pkgconf qt6-qtbase-devel qt6-qtsvg-devel qt6-qtimageformats libheif-devel LibRaw-devel libheif-freeworld \
         fontconfig-devel dejavu-sans-fonts dejavu-serif-fonts dejavu-sans-mono-fonts curl rpm-build file \
     && dnf clean all