Docker prepare user for work

prepare_user.sh

#!/bin/bash

expect_commands='
    spawn dpkg-reconfigure dash -freadline
    expect "Use dash as the default system shell?"
    send "N\r"'
    
apt install build-essential expect keychain

mkdir -pv /var/www
expect -c "${expect_commands///;}"
usermod -aG docker www-data
mkdir -v /var/www/.ssh && chmod -v 0700 $_
mkdir -v /var/www/html && chown -Rv www-data:www-data /var/www/
usermod -s /bin/bash www-data