Change silverblue-zfs-base to use fedora-coreos kernel for abi stabil…

…ity for ZFS.

silverblue-zfs-base/Containerfile

@@ -1,14 +1,20 @@
-FROM ghcr.io/cgwalters/fedora-silverblue:38
+FROM ghcr.io/twiest/silverblue-downloader-kernel-cache:latest as rpms
 
-# Install ZFS repository
-RUN rpm-ostree install https://zfsonlinux.org/fedora/zfs-release-2-4$(rpm --eval "%{dist}").noarch.rpm && \
+
+FROM quay.io/fedora/fedora-silverblue:40
+
+# Remove current kernel
+RUN rpm -evh --nodeps kernel-modules-core kernel-core kernel-modules kernel kernel-modules-extra
+
+# Add coreos kernel
+COPY --from=rpms /rpms /rpms
+RUN rpm-ostree install /rpms/kernel* && \
     # cleanup and verification stage
-    rm -vrf /var /*.rpm && \
+    rm -vrf /var /rpms && \
     ostree container commit
 
-# Install dkms deps
-RUN rpm-ostree install \
-    kernel-devel kernel-devel-matched kernel-headers kernel-srpm-macros && \
+# Install ZFS repository
+RUN rpm-ostree install https://zfsonlinux.org/fedora/zfs-release-2-5$(rpm --eval "%{dist}").noarch.rpm && \
     # cleanup and verification stage
     rm -vrf /var && \
     ostree container commit
@@ -56,7 +62,7 @@ RUN echo 'add_dracutmodules+=" zfs "' > /etc/dracut.conf.d/zfs.conf && \
 # Run dracut to build a new initrd
 RUN export KERNEL_VERSION="$(rpm -qa kernel --queryformat '%{VERSION}-%{RELEASE}.%{ARCH}')" && \
     stock_arguments=$(lsinitrd "/lib/modules/${KERNEL_VERSION}/initramfs.img"  | grep '^Arguments: ' | sed 's/^Arguments: //') && \
-    mkdir -p /tmp/dracut /var/roothome && \
+    mkdir -p /var/tmp /tmp/dracut /var/roothome && \
     bash <(/usr/bin/echo "dracut $stock_arguments") && \
     rm -rf /var/* /tmp/*  && \
     ostree container commit