What to do when you have new code to deploy for your Rails container

[mech]

I saw your Dockerfile with bundle install, I am wondering what do you do when there is new code update. Previously Capistrano can be used to deploy app, but with Dockerfile, do you mean I have to build it every time there is new code update?

[seapy]

When your code is update, rebuild docker image.
it's docker way and immutable infrastructure.

but docker use layered file system, so almost of build use cache. when your Gemfile is not updated, bundle install is not rerun and use cache. check https://docs.docker.com/articles/dockerfile_best-practices/#build-cache

[mech]

Oooo.. makes sense, tks!