Otherwise, you can clone the sample project on this GitHub repo.īefore you create the Dockerfile, you need a sample application to Dockerize. Ruby on Rails: needs to be installed if you’re creating a new Ruby application.The sample application you are going to Dockerize is stored in a Git repository on GitHub, and as such, you’ll need to have Git installed in order to clone the repository. Git: should be installed on your local machine.Instructions to install it are available on the Docker docs. Docker Compose: is needed to manage multiple containers at once.Make sure you install the correct version for your operating system. Docker: should be installed on your local machine.Docker Imageīefore you begin this tutorial, you’ll need the following prerequisites: In this tutorial, you’ll learn how to run a Ruby on Rails application inside a Docker container and what some best practices are for doing so. If you’re building a Ruby on Rails application, Docker helps to ensure that everyone on the team is running the same version of Ruby and other dependencies your application needs. By doing so, you only need to install Docker in your development environment to run the application. This is where containerization tools, like Docker, can help.ĭocker lets you package applications with all their dependencies into a single image that can be distributed across teams. Apart from the differences in the command line, the developer trying to run the applications may not have the required dependencies installed, and the process of finding and installing the correct versions of the dependencies slows development. For example, one developer may use a Windows PC to build and run an application that was developed on a Mac. When building and running applications, each developer has a slightly different development environment. When working with large distributed teams, you often run into the issue of something working on one computer but not others. If you’re interested in a containerized approach to building Ruby code then check us out. This article is about one solution to the complexities of building and deploying Ruby and Rails projects. We make building software simpler and therefore faster.
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