title: How to parameterize the config file for eksctl?
body: <p>I have the following config file (edited for brevity):</p>
  <pre><code>apiVersion: eksctl.io/v1alpha5
  kind: ClusterConfig
  
  metadata:
    name: FOO-CLUSTER
    region: eu-central-1
  
  nodeGroups:
    - name: FOO-CLUSTER-group-1
      [..]
    - name: FOO-CLUSTER-group-2
      [..]
  </code></pre>
  <p>that will be used to create clusters with <code>eksctl create cluster -f config.yml</code>.</p>
  <p>I would like to avoid hard-coding the cluster name (i.e. <code>FOO-CLUSTER</code> in this case) and extract it to a parameter (e.g. environment variable or additional file or CLI argument), so that I can later use the same file to create <code>BAR-CLUSTER</code>, <code>FEE-CLUSTER</code> and more.</p>
  <p>Is it possible?</p>