FOTT bug report

[bgmonteiro]

Describe the bug
I have an on premises installation of form recognizer.
My installation was done on a CentOS 7.9 Machine.
After completing the steps described in the link above, I was able properly install and connect the labeling tool (https://github.com/microsoft/OCR-Form-Tools/releases/tag/v2.1-ga) to train my models.

However, when I reconfigure configure the Nginx server to use SSL, I'm no longer able to use the labeling tool

To Reproduce
Steps to reproduce the behavior:

1. Install the containter version of form recognizer (https://docs.microsoft.com/en-us/azure/applied-ai-services/form-recognizer/containers/form-recognizer-container-install-run?tabs=custom)
2. Configure nginx to use ssl
3. download the labeling tool
4. Connect the labeling tool to form recognizer
5. See error

Expected behavior
A successul connection between the labeling tool and form recognizer (via nginx)

Screenshots
N/A

Versions:

• OS: CentOS 7.9 (on the server); Windows 10 (on the client)
• Docker version (docker 20.10.8 - api 1.41)

Additional context
List of docker images used:

1. mcr.microsoft.com/azure-cognitive-services/form-recognizer/custom-supervised 2.1-preview (LATEST)
2. mcr.microsoft.com/azure-cognitive-services/form-recognizer/custom-api (LATEST)
3. mcr.microsoft.com/azure-cognitive-services/form-recognizer/layout (LATEST)
4. rabbitmq 3
5. nginx alpine
6. nginx.conf (https://github.com/bgmonteiro/testfiles/blob/master/nginx.conf) and docker compose (https://github.com/bgmonteiro/testfiles/blob/master/docker-compose.yml)