Add Chroot SFTP-only User (no shell access)

chroot-sftp-only-user.md

usermod -G sftp $USER
usermod -s /bin/false $USER
chown root:root /home/$USER
chmod 0755 /home/$USER
mkdir /home/$USER/uploads
chown $USER:$USER /home/$USER/uploads

/etc/ssh/sshd_config:

...
# Subsystem sftp /usr/lib/openssh/sftp-server
Subsystem sftp internal-sftp

Match Group sftp
   ChrootDirectory %h
   ForceCommand internal-sftp
   AllowTcpForwarding no

service ssh restart