vsftpd.sh

#!/bin/sh

# If no env var for FTP_USER has been specified, use 'admin':
if [ "$FTP_USER" = "**String**" ]; then
  export FTP_USER='admin'
fi

# If no env var has been specified, generate a random password for FTP_USER:
if [ "$FTP_PASS" = "**Random**" ]; then
  export FTP_PASS=`cat /dev/urandom | tr -dc A-Z-a-z-0-9 | head -c${1:-16}`
fi

# Set passive mode parameters:
if [ "$PASV_ADDRESS" = "**IPv4**" ]; then
  # export PASV_ADDRESS=$(/sbin/ip route|awk '/default/ { print $3 }')
  export PASV_ADDRESS=$(curl -s -4 --connect-timeout 5 --max-time 10 ifconfig.co)
fi

if [ -z "$(grep "pasv_max_port=" /etc/vsftpd/vsftpd.conf)" ]; then
  echo -e "\n## passive mode port address" >> /etc/vsftpd/vsftpd.conf
  echo "pasv_max_port=$PASV_MAX_PORT" >> /etc/vsftpd/vsftpd.conf
  echo "pasv_min_port=$PASV_MIN_PORT" >> /etc/vsftpd/vsftpd.conf
  echo "pasv_address=$PASV_ADDRESS" >> /etc/vsftpd/vsftpd.conf
fi

# Execute add ftp user script
if [ -n "$ADD_FTP_USER_SCRIPT" ] && [ ! -s "/etc/vsftpd/virtual_users" ]; then
  if [ -s "/etc/vsftpd/vsftpd-add-ftp-user.sh" ]; then
    chmod +x /etc/vsftpd/vsftpd-add-ftp-user.sh
    /etc/vsftpd/vsftpd-add-ftp-user.sh
  fi
fi

# fix ftp home permissions
chown -R virtual:virtual /home/ftp/

# Run vsftpd:
/usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf