I have a Dockerfile

In the build stage I need a token which is populated from a railway variable (specifically for doppler)
I added a debug line in the docker file to check to make sure the doppler token is available, and also checked the length

The variable is available in both local and railway
BUT on my local it shows the correct length of 60
Where as Railway ONLY shows length of 5, which happens to be the same length you get if you try to copy the token on RAILWAY as copying it gives "*****"

So then I made a new variable in railway called it FAKE_TEST
now that variable is not being recognized AT ALL in the build on railway

NOTE that In my local I am able to build correctly when I run with:
docker build --build-arg DOPPLER_TOKEN=$DOPPLER_TOKEN -t your-image-name .

On railway it keeps throwing error:

builder

RUN doppler run -- pnpm run build

213ms

Unable to download secrets

Doppler Error: Invalid Auth token

Here is a snippet from my dockerfile

ARG DOPPLER_TOKEN
ARG FAKE_TEST

# Install Doppler CLI here .. omitted for simplicity
# debug lines..
doppler run --token="${DOPPLER_TOKEN}" -- pnpm run build;

I have also tried this as well which also doesnt work either

ARG FAKE_TEST
ENV FAKE_TEST=${FAKE_TEST}

ARG DOPPLER_TOKEN
ENV DOPPLER_TOKEN=${DOPPLER_TOKEN}