ssh-keys-repo-generation

# No passphrase (!important), save as [name]_ed25519
ssh-keygen -t ed25519

# File ~/.ssh/config
Hostname gitlab.com
PreferredAuthentications publickey
IdentityFile ~/.ssh/[filename]
User [username]

# Add to known hosts
ssh -T git@deployment

# pm2 ecosystem.config.js
deploy : {
		production : {
			user 			      : "[username",
			host 			      : ["ip"],
			ref  			      : "origin/[master|main]",
			repo 			      : "git@deployment:[group]/[repo].git",
			path 			      : "/var/www/[group]/[repo]/[repo-v1]",
			"post-deploy" 	: "npm install"
		}
}