title: kubernetes: precedence of environmental variables
body: <p>Assuming a pod has an environmental variable set both in its spec, as e.g. below</p>
  
  <pre><code>spec:
    containers:
    - name: env-print-demo
      image: bash
      env:
      - name: FOO
        value: "BAR"
  </code></pre>
  
  <p>as also injected to it via a <code>ConfigMap</code> (but with a different value) which is the one that will be taken into account?</p>