Dockerfile uses unsupported Cloudera 5 / Ubuntu 14

[gjmulder]

Dockerfile:

FROM genepi/cdh5-hadoop-mrv1:latest

[[cdh5-hadoop-mrv1](https://github.com/genepi/cdh5-hadoop-mrv1/blob/master/Dockerfile):](https://github.com/genepi/cdh5-hadoop-mrv1/blob/master/Dockerfile)

FROM ubuntu:14.04

It looks like Cloudera has dropped access to later versions of CDH:

As of February 1, 2021, all downloads of CDH and Cloudera Manager require a username and password and use a modified URL. You must use the modified URL, including the username and password when downloading the repository contents described below. You may need to upgrade Cloudera Manager to a newer version that uses the modified URLs.

This can affect new installations, upgrades, adding new hosts to a cluster, downloading a new parcel, and adding a cluster.

If I don't need Hadoop, can I simply use a supported version of Ubuntu and avoid the Cloudera deps?