suhaibshahid007

Create a project on Digital Ocean.
Create a new droplet using ubuntu(20.04 LTS), select server regiond, other specs, add your public SSH key and take the IP address.
Then ssh into VPS using command - ssh root@<ip-address>
Then install dokku there by using the command - wget https://raw.githubusercontent.com/dokku/dokku/v0.28.4/bootstrap.sh;
sudo DOKKU_TAG=v0.28.4 bash bootstrap.sh . For more Info can follow this link (https://pawelurbanek.com/rails-heroku-dokku-migration)
Then Specify your app name using command - dokku apps:create my-rails-app
Add dokku plugins for rails app to install postgresql/redis (sudo dokku plugin:install https://github.com/dokku/dokku-postgres.git sudo dokku plugin:install https://github.com/dokku/dokku-letsencrypt.git sudo dokku plugin:install https://github.com/dokku/dokku-redis.git redis)
Need to configure public SSH keys to accept by dokku remote. (echo 'YOUR_PUB_KEY' | dokku ssh-keys:add admin)
After that, need to add dokku remote just like we usually do for heroku by using this

suhaibshahid007

Ruby on Rails Interview Questions

Ruby

• What is a class?
• What is an object?
• What is a module? Can you tell me the difference between classes and modules?
• Can you tell me the three levels of method access control for classes and modules? What do they imply about the method?
• There are three ways to invoke a method in ruby. Can you give me at least two?
• Explain this ruby idiom: a ||= b
• What does self mean?
• What is the difference between lambda, block and proc?