run-vsftpd.sh

#!/bin/bash

# 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

# Do not log to STDOUT by default:
if [ "$LOG_STDOUT" = "**Boolean**" ]; then
    export LOG_STDOUT=''
else
    export LOG_STDOUT='Yes.'
fi

# Create home dir and update vsftpd user db:
mkdir -p "/home/vsftpd/${FTP_USER}"
chown -R ftp:ftp /home/vsftpd/

echo -e "${FTP_USER}\n${FTP_PASS}" > /etc/vsftpd/virtual_users.txt
/usr/bin/db_load -T -t hash -f /etc/vsftpd/virtual_users.txt /etc/vsftpd/virtual_users.db

# Set passive mode parameters:
if [ "$PASV_ADDRESS" = "**IPv4**" ]; then
    export PASV_ADDRESS=$(/sbin/ip route|awk '/default/ { print $3 }')
fi

echo "pasv_address=${PASV_ADDRESS}" >> /etc/vsftpd/vsftpd.conf
echo "pasv_max_port=${PASV_MAX_PORT}" >> /etc/vsftpd/vsftpd.conf
echo "pasv_min_port=${PASV_MIN_PORT}" >> /etc/vsftpd/vsftpd.conf

# If env var has been specified, set local_umask:
if [ ! "$LOCAL_UMASK" = "**String**" ]; then
    echo "local_umask=${LOCAL_UMASK}" >> /etc/vsftpd/vsftpd.conf
fi

# If env var has been specified, set file_open_mode:
if [ ! "$FILE_OPEN_MODE" = "**String**" ]; then
    echo "file_open_mode=${FILE_OPEN_MODE}" >> /etc/vsftpd/vsftpd.conf
fi

# If env var has been specified, set pasv_addr_resolve:
if [ ! "$PASV_ADDR_RESOLVE" = "**Boolean**" ]; then
    echo "pasv_addr_resolve=${PASV_ADDR_RESOLVE}" >> /etc/vsftpd/vsftpd.conf
fi

# Get log file path
export LOG_FILE=`grep xferlog_file /etc/vsftpd/vsftpd.conf|cut -d= -f2`

# stdout server info:
if [ ! $LOG_STDOUT ]; then
cat << EOB
	*************************************************
	*                                               *
	*    Docker image: mayi/vsftd                 *
	*    https://github.com/mayi/docker-vsftpd    *
	*                                               *
	*************************************************

	SERVER SETTINGS
	---------------
	· FTP User: $FTP_USER
	· FTP Password: $FTP_PASS
	· Log file: $LOG_FILE
	· Redirect vsftpd log to STDOUT: No.
	. The value that the umask for file creation is set to for local users: $LOCAL_UMASK
	. The permissions with which uploaded files are created: $FILE_OPEN_MODE
EOB
else
    /usr/bin/ln -sf /dev/stdout $LOG_FILE
fi

# Run vsftpd:
&>/dev/null /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf