{% raw %}
apiVersion: external-secrets.io/v1
kind: ExternalSecret
metadata:
  name: my-template-example
spec:
  # ...
  target:
    name: secret-to-be-created
    template:
      engineVersion: v2
      templateFrom:
      - target: Data
        literal: |-
          {{- $creds := list }}
          {{- range $user, $pw := . }}
            {{- $creds = append $creds (printf "%s" (htpasswd $user $pw)) }}
          {{- end }}
          auth: {{ $creds | join "\n" | quote }}
  dataFrom:
  - extract:
      key: /ingress-controller/valid-users
{% endraw %}