Leverage the upstream containers and add kernel to container

containers/Docker/centos-8

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+FROM docker.io/library/centos:8
+
+RUN dnf install -y --allowerasing coreutils \
+    cpio \
+    dhclient \
+    e2fsprogs \
+    ethtool \
+    findutils \
+    initscripts \
+    ipmitool \
+    iproute \
+    kernel-core \
+    net-tools \
+    network-scripts \
+    nfs-utils \
+    openssh-clients \
+    openssh-server \
+    pciutils \
+    psmisc \
+    rsync \
+    rsyslog \
+    strace \
+    wget \
+    which \
+    words
+
+RUN sed -i 's/^root:.:/root::/g' /etc/passwd
+
+# These changes make it possible for users to ssh into nodes even
+# if there is no shadow entry for the user
+RUN sed -i -e '/^account.*pam_unix\.so\s*$/s/\s*$/\ broken_shadow/' /etc/pam.d/system-auth
+RUN sed -i -e '/^account.*pam_unix\.so\s*$/s/\s*$/\ broken_shadow/' /etc/pam.d/password-auth
+
+RUN systemctl unmask console-getty.service dev-hugepages.mount \
+    getty.target sys-fs-fuse-connections.mount systemd-logind.service \
+    systemd-remount-fs.service

containers/Docker/rocky-8

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+FROM docker.io/library/rockylinux:8
+
+RUN dnf install -y --allowerasing coreutils \
+    cpio \
+    dhclient \
+    e2fsprogs \
+    ethtool \
+    findutils \
+    initscripts \
+    ipmitool \
+    iproute \
+    kernel-core \
+    net-tools \
+    network-scripts \
+    nfs-utils \
+    openssh-clients \
+    openssh-server \
+    pciutils \
+    psmisc \
+    rsync \
+    rsyslog \
+    strace \
+    wget \
+    which \
+    words
+
+RUN sed -i 's/^root:.:/root::/g' /etc/passwd
+
+# These changes make it possible for users to ssh into nodes even
+# if there is no shadow entry for the user
+RUN sed -i -e '/^account.*pam_unix\.so\s*$/s/\s*$/\ broken_shadow/' /etc/pam.d/system-auth
+RUN sed -i -e '/^account.*pam_unix\.so\s*$/s/\s*$/\ broken_shadow/' /etc/pam.d/password-auth
+
+RUN systemctl unmask console-getty.service dev-hugepages.mount \
+    getty.target sys-fs-fuse-connections.mount systemd-logind.service \
+    systemd-remount-fs.service