How do I target a specific commit SHA with capistrano deploy

Question

I am wondering how I can target a specific commit SHA in Git for deployment, using Capistrano? It should be something like

cap deploy --version=

        

Answer 1

Capistrano 3

In your deploy.rb or stage-specific file like config/deploy/production.rb

set :branch, ENV.fetch('REVISION', 'master')

This allows you to point to a specific git revision. It accepts a SHA but also anything that resolves to a real revision (e.g. git tag, annotated tag, or branch).

Use it on the command line by setting the REVISION environment variable, e.g.

bundle exec cap production deploy REVISION=80655da8d80aaaf92ce5357e7828dc09adb00993

bundle exec cap staging deploy REVISION=my-topic-branch