Setup

Basic

apt update -y
apt upgrade -y
apt install -y vim curl wget

Create User

adduser <username>
usermod -aG sudo,admin <username>

SSH-Configuration

Insert your ssh-public-keys in ~/.ssh/authorized_keys.

Then change your ssh-Port to 2222:

sudo vim /etc/ssh/sshd_config
# Search for the line with `Port 22`
# Uncomment it and change it to `Port 2222`
service ssh restart

Now you have to relog.

Install Docker and Docker-Compose

Execute the docker-Install Script:

curl -fsSL https://get.docker.com | sudo bash

After this installation you will see a comment which suggests you to install docker-rootless but I do not recommend to do this.

Now you have to install docker-compose:

sudo curl -L -o /usr/local/bin/docker-compose \
  "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)"
sudo chmod +x /usr/local/bin/docker-compose

Then create some aliases:

cat <<_EOF >> .bashrc
alias dc='sudo docker-compose'
alias docker='sudo docker'
alias dcr='sudo docker-compose down && sudo docker-compose up -d'
_EOF

Last but not least create a network for docker:

sudo docker network create --subnet 172.20.255.0/24 database
sudo docker network create --subnet 172.30.255.0/24 matrix