Nuxt.js Environment Variables are not making it through CircleCI when running in Containers

I am hoping someone can shed some light on how I might bind my nuxt.js vue application to environment variables when I am running in an immutable container in different environments. The variables are undefined when the application runs I am assuming from a build time binding requirement. I have attempted to use nuxt-env but still no luck. I am using CirceCI to build container images to run on AWS ECS Fargate.

Source: StackOverflow