This change remains backward compatible, as IPv6 support is disabled by default.
Nginx fails to start when an IPv6 `listen` directive is specified on an
IPv4-only host, preventing a single configuration from supporting both
protocols. To work around this limitation, the Docker image build
process now generates a separate copy of the Nginx configuration for IPv6.
An environment variable can be used to select either the IPv4 or IPv6
configuration when launching the container.
By embedding both configurations during the image build, we avoid making
file system changes at runtime — a step toward an immutable filesystem design.
* add extra logging for debug
* add default simkl keys
* better log levels
* better mal api rate limit handler
* add debug logging for celery
* ignore tv without episode data in simkl import
* add api 404 handler in simkl import
* standardize import result message
* allow personal keys for simkl import
* update readme
* add simkl import tests
* add info on where to get SIMKL keys
