Docker how to use boolean value on spec.container.env.value

spec.container.env.value is defined as string. see here: https://kubernetes.io/docs/api-reference/v1.6/#envvar-v1-core

You'd have to cast/convert/coerse to boolean in your container when using this value

Try escaping the value. The below worked for me:

- name: DEMO_GREETING
  value: "'true'"