BOOKS_HOST=books.example.com
ACME_EMAIL=you@example.com
PUID=1000
PGID=1000
TZ=Etc/UTC
AUDIOBOOKS_DIR=/srv/audiobooks
# If this subnet is already in use, change all three values to a free subnet and IPs.
PROXY_SUBNET=172.30.90.0/24
PROXY_IP=172.30.90.2
AUDIOSILO_IP=172.30.90.3