Update Dockerfile

Updated the rsync installation to remove the dependence on an old package which is no longer available.

Also removed the 'MAINTAINER' tag due to it being deprecated by docker.

docker/kayobe/Dockerfile

@@ -5,7 +5,6 @@
 # rockylinux:9
 ARG BASE_IMAGE="quay.io/centos/centos:stream8"
 FROM ${BASE_IMAGE}
-MAINTAINER "Will Szumski" <[email protected]>
 
 # Unclear at this time if different environments will change
 # control host bootstrap.
@@ -26,21 +25,17 @@ ENV container docker
 # VOLUME [ "/sys/fs/cgroup" ]
 
 # CMD ["/usr/sbin/init"]
-# Note on CentOS 8 rsync-3.1.3-14.el8 install:
-# Workaround rsync: --sparse-block=1024: unknown option
-# Hopepfully they have fixed this issue before this old
-# package is removed.
-# See: https://bugzilla.redhat.com/show_bug.cgi?id=2043753
+
 ARG BASE_IMAGE="quay.io/centos/centos:stream8"
 RUN dnf install epel-release -y && \
     dnf update -y --nobest && \
     dnf install -y gcc git vim python3-pyyaml \
         libffi-devel sudo which openssh-server e2fsprogs \
         diffstat diffutils debootstrap procps-ng gdisk util-linux \
-        dosfstools lvm2 kpartx systemd-udev bash-completion && \
+        dosfstools lvm2 kpartx systemd-udev bash-completion rsync && \
     if [ "$(grep "^PRETTY_NAME=\"Rocky Linux 9" /etc/os-release)" ] ; then \
-    dnf install -y rsync python3 python3-pip iproute ; else \
-    dnf install -y python3-virtualenv rsync-3.1.3-14.el8 ; fi && \
+    dnf install -y python3 python3-pip iproute ; else \
+    dnf install -y python3-virtualenv ; fi && \
     dnf clean all
 
 # Configure lvm not to use udev for device discovery. This allows you to use