added env var

What is your Merge about?

NODE_EXTRA_CA_CERTS environment variable allows to provide a custom CA certificate file. We are pointing to the default value of updated CA trust store of the underlying UBI image

For more information please visit Iron Bank Documentation

Note: Please be sure you create an issue related to this merge request and the issue is labeled ~"Hardening::Review", this will initiate a CHT member review of your merge request.