Install MYSQL

https://www.digitalocean.com/community/tutorials/how-to-install-mysql-on-ubuntu-20-04

Install JAVA

https://www.digitalocean.com/community/tutorials/how-to-install-java-with-apt-on-ubuntu-18-04

Install MVN

https://linuxize.com/post/how-to-install-apache-maven-on-ubuntu-20-04/

Generate SSH

ssh-keygen cd .ssh

https://www.digitalocean.com/community/questions/error-permission-denied-publickey-when-i-try-to-ssh https://www.digitalocean.com/community/questions/how-to-fix-docker-got-permission-denied-while-trying-to-connect-to-the-docker-daemon-socket

Nodejs

Improving Nodejs Performance with Clustering

https://blog.appsignal.com/2021/02/03/improving-node-application-performance-with-clustering.html