calibre-cron/build/entrypoint.sh

#!/bin/sh

# Check if the TZ environment variable is set
if [ -n "$TZ" ]; then
  # Set the timezone
  echo "Setting timezone to $TZ"
  ln -fs /usr/share/zoneinfo/$TZ /etc/localtime && dpkg-reconfigure -f noninteractive tzdata
else
  echo "Timezone not specified. Using default timezone."
fi

# Start cron
echo "Starting cron..."
cron -f