I have a JavaScript that should be added to the header if a specific env-variable is set.
When I print the content of process.env, there seems to be none of my envs.

Here some code:

export default defineNuxtConfig({
    runtimeConfig: {
        public: {
            includeInHeader: true
...
    app: {
        head:
            process.env.INCLUDE_IN_HEADER
                ? {
                      script: [{ src: '/scripts/myJsFile.js' }],
                  }
                : undefined
    },

How can I include a js-file to the header if a certain env is set?