fix CORS issue in .env.example

[Hariharan1828]

Bug Description:

resolving Bug #2157 , when attempting to set the CORS_ORIGINS variable to CORS_ORIGINS="*" in a Docker-compose environment, it did not effectively allow requests from all origins as expected. This resulted in CORS-related issues, particularly when attempting to request an embedded chat from another origin.

Resolution:

The issue was resolved by modifying the .env.example file to suggest setting CORS_ORIGINS=* instead of CORS_ORIGINS="*". This change ensures compatibility and functionality with both configurations, enabling the application to work seamlessly with any custom origin or when set to allow requests from all origins.

Testing:

Prior to submission, the updated .env.example file was tested locally within a Docker-compose setup to verify that both configurations (CORS_ORIGINS=* and CORS_ORIGINS="*") functioned as expected, allowing requests from various origins without encountering CORS-related errors.

Additional Notes:

This pull request addresses an important bug related to CORS origin configuration in Docker-compose environments. Review and merge are requested to incorporate the fix into the Flowise repository. Any feedback or alternative solutions are welcome for further discussion.

[HenryHengZJ]

thanks @Hariharan1828 !