How to make Private GH packages work with now and yarn

now.json

{
  "build": {
    "env": {
      "MY_GH_TOKEN": "@my_gh_packages_access_token",
      "NPM_RC": "registry=https://npm.pkg.github.com/<USERNAME or ORG>\n//npm.pkg.github.com/:_authToken=${MY_GH_TOKEN}\n//npm.pkg.github.com/<USERNAME or ORG>/:_authToken=${MY_GH_TOKEN}\nalways-auth=true\n"
    }
  },
}