HomeCoursesDocker for Rails Developers

Beginner

10h

Updated 2 months ago

Docker for Rails Developers

Gain insights into Docker architecture, images, and containers. Learn Docker Compose, JS integration, and production readiness. Master deploying, clustering, and scaling Rails apps using Docker tools.

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Overview

Content

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This course is your field manual for building Rails applications with Docker. To kick things off, you’ll start by learning the basics of Docker like architecture, images, and containers. You will then be introduced to Docker Compose and use it to build up to a multiservice application with Redis. You will then work to get your Dockerized setup to play nice with JavaScript, using both the standard asset pipeline and webpacker, Rails’ newest approach for integrating modern JavaScript front ends. Lastly, you will learn how to prepare your Rails app for production. Once ready, using Docker’s own tools, you will provision machines, create a cluster, deploy the app, and scale the app’s resources to meet its changing needs. By the end of the course, you will be able to confidently use Docker in any of your further projects.

This course is your field manual for building Rails applications with Docker. To kick things off, you’ll start by learning the...Show More

WHAT YOU'LL LEARN

Learn the Docker fundamentals you need to know to get you off the ground

Get your hands dirty making and running the real Rails app

Learn how Compose allows adding multiple services

Learn to integrate a frontend option with your Rails app

Use Docker to deploy the Rails app to Cloud

Learn the Docker fundamentals you need to know to get you off the ground

TAKEAWAY SKILLS

Docker

Docker Containers

Docker Architecture

Docker Images

Dockerfile

Docker Commands

Docker Compose

Adding Database using Compose

React frontend in Rails

Webpacker

Testing via Docker

Docker Compose Commands

Ruby Gem's Management

CaaS Platforms

docker-machine

Using docker-swarm

DB migration

Ops Explanation

Production Images

Docker Hub

Orchestrators

IaaS Platforms

Deployment on Cloud

Content

104 Lessons18 Quizzes3 Assessments

Introduction

2 Lessons

Get familiar with Docker to streamline Rails development with containers and enhanced efficiency.

Who is this Course for?

Why Use Docker for Rails?

A Brave New World

6 Lessons

Unpack the core of Docker's fundamental concepts, Ruby script execution, Rails app generation, and architecture.

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

6 Lessons

Go hands-on with running and configuring Rails apps in Docker containers efficiently.

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

6 Lessons

Enhance your skills in optimizing Docker images for Rails applications with caching and CMD improvements.

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

8 Lessons

Take a closer look at managing Rails apps with Docker Compose for efficient development.

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

6 Lessons

See how it works to integrate Redis with Rails using Docker for enhanced functionality.

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

Docker for Rails Developer—Exam 1

Assessment

Adding a Database: Postgres

7 Lessons

Master the steps to integrate Postgres with Rails using Docker, ensuring secure, persistent configurations.

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

6 Lessons

Learn how to use Docker, Webpacker, React, and RSpec for Rails JavaScript integration.

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

8 Lessons

Get started with integrating RSpec, system tests, and JavaScript support in Dockerized Rails.

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

10.

Advanced Gem Management

5 Lessons

Go hands-on with efficient gem management techniques using Docker for Rails projects.

The Downside to Our Existing Approach

Solution To Manage Gems Effectively

Testing The New Method Of Gem Management

Quick Recap

Quiz: Advanced Gem Management

11.

Some Minor Irritations

5 Lessons

Grasp the fundamentals of managing Rails server start-up and shutdown in Docker environments.

Rails Server not starting?

Server Not Shutting Down Gracefully

Quick Recap

Quiz: Some Minor Irritations

Closing Thoughts on Docker in Development

Docker for Rails Developer—Exam 2

Assessment

12.

The Production Landscape

10 Lessons

Gain insights into Docker's impact on operations, orchestration tools, and deployment strategies.

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

13.

Preparing for Production

5 Lessons

Follow the process of configuring, building, and distributing Docker images for Rails production.

Configuring a Production Environment

A Production Image

How to make Custom Image

Quick Recap

Quiz: Preparing for Production

14.

A Production-Like Playground

10 Lessons

Master the steps to simulate, configure, deploy, and scale Docker environments for Rails apps.

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

Quick Recap

Quiz: A Production-Like Playground

Deploy a Full Stack Web Application over Kubernetes

Project

15.

Deploying to the Cloud

8 Lessons

Step through Docker Swarm deployment on AWS and DigitalOcean, including scaling, visualizing, and resource cleanup.

The Cloud: Our Final Frontier

Deploying to AWS

Visualizing Containers

Scaling Up

Cleaning Up

Deploying to DigitalOcean

Quick Recap

Quiz: Deploying to the Cloud

Docker for Rails Developer - Exam 3

Assessment

16.

Closing Thoughts and Next Steps

3 Lessons

Discover the logic behind Docker's capabilities, continuous learning areas, and efficiency enhancements.

Reflection on Journey

What Should I Learn About Next?

What More Can I Learn?

17.

APPENDIX

3 Lessons

Go hands-on with Docker installation, platform differences, and finding reliable Docker images.

Installing Docker

Platform Differences

Finding Images to Use

Certificate of Completion

Showcase your accomplishment by sharing your certificate of completion.

Course Author:

The Pragmatic Programmers

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Skip the LeetCode grind with a custom roadmap that adapts to your goals. Hands-on practice for Coding Interviews, System Design, and more.

Mock Interviews

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AI Prompt

Build prompt engineering skills. Practice implementing AI-informed solutions.

Code Feedback

Evaluate and debug your code with the click of a button. Get real-time feedback on test cases, including time and space complexity of your solutions.

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