Merge pull request #3958 from pi-hole/Fix/centos_stream

Fix release check for centos stream

automated install/basic-install.sh

@@ -408,7 +408,7 @@ elif is_command rpm ; then
         SUPPORTED_CENTOS_VERSION=7
         SUPPORTED_CENTOS_PHP_VERSION=7
         # Check current CentOS major release version
-        CURRENT_CENTOS_VERSION=$(grep -oP '(?<= )[0-9]+(?=\.)' /etc/redhat-release)
+        CURRENT_CENTOS_VERSION=$(grep -oP '(?<= )[0-9]+(?=\.?)' /etc/redhat-release)
         # Check if CentOS version is supported
         if [[ $CURRENT_CENTOS_VERSION -lt $SUPPORTED_CENTOS_VERSION ]]; then
             printf "  %b CentOS %s is not supported.\\n" "${CROSS}" "${CURRENT_CENTOS_VERSION}"