03 Prepare the server on DigitalOcean (or whatever)

Be sure you have a ssh-key

• If you DO NOT already have an ssh-key on your local machine in ~/.ssh, do

$ ssh-keygen

note: DO NOT DO IT IF YOU ALREADY HAVE ONE

• Register your key (cat ~/.ssh/id_rsa.pub) within your DigitalOcean project if not already done (settings->security).

Create a new droplet (or server if not DigitalOcean)

Choose "docker on Ubuntu" as an OS on the 'Marketplace', and the size of server you want.

Create a non-root user on the server

• then:

$ ssh root@<IP adress>
$ adduser <user>
$ usermod -aG sudo <user>
$ user -aG docker <user>
mkdir -p /home/<user>/.ssh
touch /home/<user>/.ssh/authorized_keys
nano /home/<user>/.ssh/authorized_keys

• open a second terminal and:

cat ~/.ssh/id_rsa.pub

• Copy/paste the output of this command in the nano editor of the distant terminal, save it, and close this local terminal.

• In the distant terminal, still logged in:

exit
ssh <user>@<IP adress>
sudo apt update
sudo apt install docker-compose
sudo apt upgrade -y # may be long and ask a few default choices

You can now log in the server with ssh as a normal user :)

Set the firewall of the server

sudo ufw app list
sudo ufw allow OpenSSH
sudo ufw enable
sudo ufw status

Add a key for github

sudo ssh-keygen -t ed25519 -C "Github Deploy Key"
# then leave the default locations, and blank password (useless)
sudo cp /root/.ssh/id_ed25519.pub ~/.ssh/id_ed25519.pub
cat ~/.ssh/id_ed25519.pub

Copy the output, go in the github repository, "setting/deploy keys", "+add a deploy key" paste the key, and name it.

git clone

In git repository, copy the clone link

then on the server:

sudo git clone git@github.com:your/project...
cd <project folder>

sudo cp .env-sample .env
sudo nano .env
# edit the .env file

Read carefully each line of the .env file and set them up before going further.