Implement local repo inside the VM instance for additional packages

During cloud-init package installation it is observered if `*.rpm` used
which include required package and all dependencies then installed
dependencies is not going to override and you need to first uninstall
those or remove the that package from *.rpm list which is not ideal.
With current approach it is easy to installed package just using the
required package name since all deps is part of local repo and if
package already installed it can be ignored.

Author: praveenkumar

createdisk-library.sh

@@ -189,11 +189,24 @@ function install_additional_packages() {
         # SCP the downloaded rpms to VM
         ${SCP} -r ${pkgDir}/packages core@${vm_ip}:/home/core/
 
+        # Create local repo of downloaded RPMs in the VM
+        ${SSH} core@${vm_ip} 'sudo bash -x -s' <<EOF
+            podman run --rm -v /home/core/packages:/packages:Z quay.io/centos/centos:stream9 sh -c "dnf install -y createrepo && createrepo /packages"
+            podman rmi quay.io/centos/centos:stream9
+EOF
+        ${SSH} core@${vm_ip} "sudo bash -c 'cat > /etc/yum.repos.d/local.repo << EOF
+[local]
+name=Local repo
+baseurl=file:///home/core/packages/
+enabled=1
+gpgcheck=0
+EOF'"
         # Install these rpms to VM
-        ${SSH} core@${vm_ip} -- 'sudo rpm-ostree install /home/core/packages/*.rpm'
+        ${SSH} core@${vm_ip} -- "sudo rpm-ostree install $ADDITIONAL_PACKAGES"
 
-        # Remove the packages from VM
-        ${SSH} core@${vm_ip} -- rm -fr /home/core/packages
+        # Remove the packages and repo from VM
+        ${SSH} core@${vm_ip} -- sudo rm -fr /home/core/packages
+        ${SSH} core@${vm_ip} -- sudo rm -fr /etc/yum.repos.d/local.repo
 
         # Cleanup up packages
         rm -fr ${pkgDir}

createdisk.sh

@@ -138,6 +138,8 @@ EOF
    ${SSH} core@${VM_IP} -- "sudo rpm-ostree install qemu-user-static-x86"
 fi
 
+# Beyond this point, packages added to the ADDITIONAL_PACKAGES variable won’t be installed in the guest
+install_additional_packages ${VM_IP}
 cleanup_vm_image ${VM_NAME} ${VM_IP}
 
 # Delete all the pods except openshift-multus (which have file for crio cni config)