Next_public_base_url

Hi, scratching my head a bit.

Building out based on the Vercel Turborepo Next template. I have a few custome environment variable and want to build use of the system ones like VERVEL_URL etc.

I have a file for local dev, and setting the vars in the Dashboard for deployed envs.
Disable and re-enabled the “Automatically lay bare System Environment Variables”

The build log was Warning that the envs were not allows in turborepo so added them to the array. Warnings now gone. But vars still not showing up in the deployed build.

I’ve put up some console logs which work locally.
But deployed they return undefined

Lib function to restore the base URL

Deployed, check console: https://member-git-basic-partner-dash-onfire-health.vercel.app/login
“next”: “^15.3.0”,
“react”: “^19.1.0”,
“turbo”: “^2.5.4”,
“node”: “>=18”
“packageManager”: “bun@1.2.18”,

I am deploying a Next app and when trying to obtain a value from the .env file it’s either undefined or it reads the wrong value of http://localhost:3000

In the .env file it’s defined as:

I have it defined in the fly.io webpage admin in secrets with name & value;

in my local terminal if I use flyctl secrets list I can view the secret listed;

I have seen this help page Fly.io build secrets which states we need to

1. mount the secrets on the dockerfile
2. provide the value when fly deploy

In the docker file there is this section where it’s mounted:

then when I deploy in terminal I use:

(this deploy seems to be much faster than a normal deploy with out the secret;)

In the page I placed a simple console log to view the value in the browser such as

But what occurs is that the value of the secret is stuck on “http://localhost:3000” not the production value which should be “https:www.rleaguez.com/”

If you want to see the console log the page is here:

What needs to be done differently to get the correct secret value in this Next.js app on fly.io?

Thanks in advance for any & all feedback~

I am trying to use contentful cms marketing template and the vercel deployment option to host my demo app for testing. Here is the failing build log entries.

Build Failed

Command “NEXT_PUBLIC_BASE_URL=”${NEXT_PUBLIC_BASE_URL:-https://$next_public_vercel_url}/" yarn build" exited with 1

Build Log

Detected Next.js version: 12.3.1
Running “NEXT_PUBLIC_BASE_URL=”${NEXT_PUBLIC_BASE_URL:-https://$next_public_vercel_url}/" yarn build"
yarn run v1.22.19
$ next build
warn - Invalid next.config.js options detected:

Failed to compile.
./src/components/features/card-leadership/card-leadership.tsx:88:32
Type error: Argument of type ‘{ fieldId: string; }’ is not assignable to parameter of type ‘({ fieldId: string; manuallyTagged: boolean | undefined; } | { fieldId: string; manuallyTagged: boolean | undefined; assetId: string; }) & Pick<LivePreviewProps, “locale” | … 1 more … | “space”>’.
Type ‘{ fieldId: string; }’