chore(build): use BCI 15.4 and related repos

Signed-off-by: David Ko <dko@suse.com>

package/Dockerfile

@@ -3,12 +3,12 @@ FROM registry.suse.com/bci/bci-base:15.3
 ARG ARCH=amd64
 
 # Based on https://github.com/kubernetes-sigs/nfs-ganesha-server-and-external-provisioner/blob/master/deploy/docker/x86_64/Dockerfile
-FROM registry.suse.com/suse/sle15:15.3 AS build
+FROM registry.suse.com/suse/sle15:15.4 AS build
 
 # Build ganesha from source, install it to /usr/local and a use multi stage build to have a smaller image
 # RUN dnf install -y tar gcc cmake-3.14.2-1.fc30 autoconf libtool bison flex make gcc-c++ krb5-devel dbus-devel jemalloc-devel libnfsidmap-devel libnsl2-devel userspace-rcu-devel patch libblkid-devel
 RUN zypper -n addrepo --refresh https://download.opensuse.org/repositories/system:/snappy/SLE_15/ snappy && \
-    zypper -n addrepo --refresh https://download.opensuse.org/repositories/devel:/tools:/building/SLE_15_SP2/devel:tools:building.repo && \
+    zypper -n addrepo --refresh https://download.opensuse.org/repositories/devel:/tools:/building/15.4/devel:tools:building.repo && \
     zypper --gpg-auto-import-keys ref
 
 RUN zypper -n install autoconf bison curl cmake doxygen make git gcc-c++ flex Mesa-libGL-devel libdbus-1-3 \
@@ -41,7 +41,7 @@ RUN mkdir -p /ganesha-extra \
     && mkdir -p /ganesha-extra/etc/dbus-1/system.d \
     && cp src/scripts/ganeshactl/org.ganesha.nfsd.conf /ganesha-extra/etc/dbus-1/system.d/
 
-FROM registry.suse.com/suse/sle15:15.3
+FROM registry.suse.com/suse/sle15:15.4
 
 RUN zypper addrepo --refresh https://download.opensuse.org/repositories/system:/snappy/SLE_15/ snappy && \
     zypper --gpg-auto-import-keys ref