title: Helm chart: Why environment variable defined in values.yml of helm chart not added to generated manifest?
body: <p>I am trying to add environment variable to my wordpress helm chart. My values.yml file looks like :</p>
  <pre><code>#pvc wordpress
  persistence:
    enabled: false
  
  #pvc mariadb
  mariadb:
    enabled: false 
  
  externalDatabase:
    host: mysql
    port: 3306
    user: benighil@benighil 
    password: &quot;SomePassword&quot;
    database: bitnami_wordpress
  
  extraEnv:
    - name: &quot;WORDPRESS_DATABASE_SSL_CA_FILE&quot; # &lt;== THIS ONE
      value: /tmp/ca-cert
  
  ## Additional volume mounts
  ## Example: Mount CA file
  extraVolumeMounts:
    - name: ca-cert
      mountPath: /tmp
  
  ## Additional volumes
  ## Example: Add secret volume
  extraVolumes:
   - name: ca-cert
     secret:
       secretName: ca-cert
  </code></pre>
  <p>But i generate a template using the following cmd :</p>
  <pre><code>helm template wp azure-marketplace/wordpress -n app --create-namespace -f values.yml &gt; template.yml
  </code></pre>
  <p>and when i search the word : <code>WORDPRESS_DATABASE_SSL_CA_FILE</code> in the file <code>template.yml</code>  :</p>
  <p><code>terminal: grep WORDPRESS_DATABASE_SSL_CA_FILE template.yml</code> there is nothing returned !</p>
  <p>I would like to know why ?</p>
  <p>Thank you in advance!</p>