Ubuntu server setup (VPS)：修订间差异

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 sudo chown -R deploy:deploy /home/deploy/.ssh
-sudo cat /home/deploy/.ssh/authorized_keys [sudo] password for riguz: ssh-ed25519 AAAA...
+# generate new key in local pc
+ssh-keygen -t ed25519 -C "gh-actions-deploy-$(date +%Y%m%d)" -f ~/.ssh/gh_deploy_new
+# save pub key to authorized_keys in server
+cat gh_deploy_new.pub
+sudo vim /home/deploy/.ssh/authorized_keys
+cat gh_deploy_new
+# save private key to DEPLOY_KEY
+# verify if the key is able to login
+ssh -i ~/.ssh/gh_deploy_new -o IdentitiesOnly=yes -p 2222 deploy@83.229.121.141
-sudo -u deploy bash -c 'echo "ssh-ed25519 AAAAxxxxxxx github-actions-deploy" >> /home/deploy/.ssh/authorized_keys'
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