NODE_ENV=production PORT=__PORT__ HOST=localhost CONFIG_PATH=__DATADIR__/config AUDIOBOOK_PATH=__DATADIR__/audiobooks METADATA_PATH=__DATADIR__/metadata AUDIOBOOKSHELF_UID=__APP__ AUDIOBOOKSHELF_GID=__APP__ FFMPEG_PATH=/usr/bin/ffmpeg FFPROBE_PATH=/usr/bin/ffprobe SOURCE=local