feat: add S3_REJECT_UNAUTHORIZED environment variable for self-signed certificate support

- Introduced the S3_REJECT_UNAUTHORIZED variable across multiple configuration files to allow users to disable strict SSL certificate validation for self-signed certificates.
- Updated documentation to reflect the new variable and its usage in various contexts, including examples for MinIO and S3-compatible services.
- Enhanced server configuration to handle the new variable appropriately, ensuring compatibility with self-hosted S3 solutions.

docker-compose-bind-mount-example.yaml

@@ -5,6 +5,7 @@ services:
     environment:
       # Optional: Uncomment and configure as needed (if you don`t use, you can remove)
       # - ENABLE_S3=true # Set to true to enable S3-compatible storage (OPTIONAL - default is false)
+      # - S3_REJECT_UNAUTHORIZED=false # Set to false to allow self-signed certificates (OPTIONAL - default is true)
       # - DISABLE_FILESYSTEM_ENCRYPTION=false # Set to false to enable file encryption (ENCRYPTION_KEY becomes required) | (OPTIONAL - default is true)
       # - ENCRYPTION_KEY=change-this-key-in-production-min-32-chars # CHANGE THIS KEY FOR SECURITY (REQUIRED if DISABLE_FILESYSTEM_ENCRYPTION is false)
       # - PALMR_UID=1000 # UID for the container processes (OPTIONAL - default is 1000) | See our UID/GID Documentation for more information