subsync sc0ty (v0.17.0)
https://github.com/sc0ty/subsync (Docker version)
Share some movie/tv libraries to the docker when setup, for example:
/mnt/user/movies:/media/movies
Then you can call docker in your scripts as:
docker exec subsync /bin/bash -c "subsync --cli sync --ref '/media/movies/movie/movie.mkv' --sub '/media/movies/movie/movie.srt' --out '/media/movies/movie/movie.out.srt'"