Docker compose fails for signing key service

[jeremytourville]

Version
https://github.com/pulp/pulp-oci-images.git:latest

Describe the bug
service "signing_key_service" didn't complete successfully: exit 1

To Reproduce
Windows, docker desktop environment
cd to C:\Users\TourvilleJA\Downloads\pulp-oci-images-latest\images\compose
run docker compose -f compose.yml up -d

Expected behavior
All containers should start and run

Additional context
I have tried adding the fix: Fix docker-compose add_signing_service script #648

I have tried both ways as suggested by mdellweg and gerrod3
"${PULP_SIGNING_KEY_FINGERPRINT-}"
"${PULP_SIGNING_KEY_FINGERPRINT:-}"

Neither method fixes the issue. It is still present as evidenced in the logs.
signing_key_service-1 | /usr/bin/add_signing_service.sh: line 6: PULP_SIGNING_KEY_FINGERPRINT: unbound variable

NOTE
I did some further testing after opening this issue. The branch :latest is the one giving me issues. If I download from branch 3.24 everything seems to work ok using the same set of directions.

[ihatethecloud]

Were you able to find a solution @jeremytourville? It seems the issue is still outstanding.

[jeremytourville]

I didn't intend to close the issue. I did not find a solution. The issue is outstanding.

[ihatethecloud]

I was able to go around it.
Add to signing_key_service

    environment:
       PULP_SIGNING_KEY_FINGERPRINT: ''