SSH hostkeys removed from build stage

dockerfiles/base/Dockerfile.rhel9.2

@@ -124,16 +124,20 @@ RUN ln -s /usr/bin/python3 /usr/bin/python
 
 RUN python3.10 -m pip install habana_media_loader=="${VERSION}"."${REVISION}"
 
+# SSH Configuration for setting up host keys at runtime
+COPY generate_ssh_keys.sh /root/generate_ssh_keys.sh
+
 # SSH configuration necessary to support mpi-operator v2
 RUN mkdir -p /var/run/sshd && \
     sed -i 's/[ #]\(.*StrictHostKeyChecking \).*/ \1no/g' /etc/ssh/ssh_config && \
     sed -i 's/#\(ForwardAgent \).*/\1yes/g' /etc/ssh/ssh_config && \
     echo "    UserKnownHostsFile /dev/null" >> /etc/ssh/ssh_config && \
     sed -i 's/#\(StrictModes \).*/\1no/g' /etc/ssh/sshd_config && \
-    ssh-keygen -A && \
+    echo "/root/generate_ssh_keys.sh" >> ~/.bashrc && \
     mkdir -p /var/run/sshd && echo "/usr/sbin/sshd -p 3022" | tee -a ~/.bashrc
 
 ENV GC_KERNEL_PATH=/usr/lib/habanalabs/libtpc_kernels.so
 ENV HABANA_LOGS=/var/log/habana_logs/
 ENV HABANA_SCAL_BIN_PATH=/opt/habanalabs/engines_fw
-ENV HABANA_PLUGINS_LIB_PATH=/opt/habanalabs/habana_plugins
+ENV HABANA_PLUGINS_LIB_PATH=/opt/habanalabs/habana_plugins
+

dockerfiles/base/generate_ssh_keys.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Copyright (c) 2023 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+function gen_single_key() {
+	ALG_NAME=$1
+	if [[ ! -f /etc/ssh/ssh_host_${ALG_NAME}_key ]]; then
+		ssh-keygen -q -N "" -t "${ALG_NAME}" -f "/etc/ssh/ssh_host_${ALG_NAME}_key"
+	fi
+}
+
+gen_single_key dsa
+gen_single_key rsa
+gen_single_key ecdsa
+gen_single_key ed25519