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All LessonsFree Lessons (2)

Introduction

Who is this Course for?Why Use Docker for Rails?

A Brave New World

Basic Concepts — Images and Containers Running a Ruby Script Without Ruby Installed Generating a New Rails App Without Ruby Installed Docker Architecture Quick Recap Quiz: A Brave New World

Running a Rails App in a Container

How Do We Run Our Rails App?Dockerfile Creation and Explanation Defining Our First Custom Image Running a Rails Server with Our Image Quick Recap Quiz: Running a Rails App in a Container

Fine-Tuning Our Rails Image

A Default Command .dockerignore File The Image Build Cache Caching Issues Quick Recap Quiz: Fine-Tuning Our Rails Image

Describing Our App Declaratively with Docker Compose

Getting Started with Compose Launching the Rails app Mounting a Volume Using Compose and Sharing Images Starting and stopping services Other Common Tasks Quick Recap Quiz: Describing Our App Declaratively with Docker Compose 🍀 Challenge

Beyond the App: Adding Redis

Starting a Redis Server Making a Manual Connection to Redis Server Learning How Containers Communicate Our Rails App and Redis Communication Quick Recap Quiz: Beyond the App: Adding Redis

Course Assessment

Docker for Rails Developer—Exam 1

Adding a Database: Postgres

Starting a Postgres Server Connecting to Postgres from a Separate Container Creating Our App Databases Restarting Our Rails Server with Database Decoupling Data From a Container Quick Recap Quiz: Adding a Database: Postgres

Playing Nice with JavaScript

Front-End Options Compiling Assets with Webpacker A Hello World React App Quick Recap Running Tests: Configuring RSpec Quiz: Playing Nice with JavaScript

Testing in a Dockerized Environment

Ruby Testing Framework: RSpec Our First Test using RSpec Setting Up Rails System Tests Running Tests: Providing Support for JavaScript Seeing the Tests Run Debugging Quick Recap Quiz: Testing in a Dockerized Environment

Advanced Gem Management

The Downside to Our Existing Approach Solution To Manage Gems Effectively Testing The New Method Of Gem Management Quick Recap Quiz: Advanced Gem Management

Some Minor Irritations

Rails Server not starting?Server Not Shutting Down Gracefully Quick Recap Quiz: Some Minor Irritations Closing Thoughts on Docker in Development

Course Assessment

Docker for Rails Developer—Exam 2

The Production Landscape

The “Ops” in DevOps Container Orchestration A Tale of Two Orchestrators: Swarm and Kubernetes IaaS vs. CaaS Provisioning Your Infrastructure CaaS Platforms Serverless for Containers How to Decide What’s Right for Me?Quick Recap Quiz: The Production Landscape

Preparing for Production

Configuring a Production Environment A Production Image How to make Custom Image Quick Recap Quiz: Preparing for Production

A Production-Like Playground

Production-Like Environment

Exploring the Docker Machine

Introducing Docker Swarm

Describing Our App to Swarm

Migrating the Database

Deploying Our App on a Swarm

Tasks and Swarm’s Scaling Model

Scaling Up the Service

Quiz: A Production-Like Playground

Deploying to the Cloud

The Cloud: Our Final Frontier Deploying to AWS Visualizing Containers Scaling Up Cleaning Up Deploying to DigitalOcean Quick Recap Quiz: Deploying to the Cloud

Course Assessment

Docker for Rails Developer - Exam 3

Closing Thoughts and Next Steps

Reflection on Journey What Should I Learn About Next?What More Can I Learn?

APPENDIX

Installing Docker Platform Differences Finding Images to Use

Docker for Rails Developers/

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Describing Our App to Swarm

Describing Our App to Swarm

Learn how we can communicate with Swarm.

We'll cover the following...

- Stack file
  - Modifying docker-stack.yml

You’re probably becoming pretty comfortable describing our app as a set of services defined in a Compose file. However, a docker-compose.yml file is development-focused: it lets us rebuild images easily and not get bogged down by unnecessary details such as deployment configuration.

Stack file

However, now when we come to deployment, we need something that is ...