Setting up a Debian server

SSH configuration

Login on you server as root and create a new user (change the username to your preferences).

adduser myuser
su myuser

On your local computer generate a new key for SSH.

ssh-keygen -t rsa -b 4096 -C "comment"

Then copy the created key on the server using ssh-copy-id utilitary

ssh-copy-id -i /path/to/key

on server cat .ssh/authorized_keys to test

Edit the file /etc/ssh/sshd_config and do the following modifications:

• Uncomment Port and set to whatever you want
• Uncomment authorizedKeysFiles
• Set the line PasswordAuthentication no
• Uncomment PermitRootLogin no
• Add the line AllowUsers myuser

Then restart the ssh daemon with systemctl restart sshd.

Don't forget to update your packages.

apt-get update
apt-get upgrade

Docker

curl -fsSL https://get.docker.com -o get-docker.sh
sh ./get-docker.sh

Docker compose

sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose
echo alias dc='docker-compose' >> /root/.bashrc