Free course

Docker Course

Learn containers by packaging a Node.js API, connecting it to PostgreSQL, building a Compose workflow, and preparing a secure production image.

5 modules · 25 lessons · No signup

Prerequisites: Shell Commands, Linux Basics and Node.js

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What you'll learn

Build, run, inspect, persist, connect, and ship a containerized Node.js application with Docker and Docker Compose.

Course contents

  1. Container foundations

    Understand images and containers, install Docker, and inspect a running workload.

    1. ✓ What a container is
    2. ✓ Install and verify Docker
    3. ✓ Run and inspect a container
    4. ✓ Connect images, containers, and registries
    5. ✓ Check your understanding: container foundations

  2. Build images

    Create the Notes API, write its Dockerfile, and use build context and caching well.

    1. ✓ Create the Notes API
    2. ✓ Write the first Dockerfile
    3. ✓ Control the build context
    4. ✓ Use layer caching deliberately
    5. ✓ Check your understanding: build images

  3. Data and networking

    Persist data, mount files, publish ports, and connect containers by name.

    1. ✓ Separate data from containers
    2. ✓ Choose volumes or bind mounts
    3. ✓ Publish ports deliberately
    4. ✓ Connect containers by name
    5. ✓ Check your understanding: data and networking

  4. Compose applications

    Run the API and PostgreSQL together with health checks and a fast development loop.

    1. ✓ Describe services with Compose
    2. ✓ Configure the database service
    3. ✓ Add health and startup handling
    4. ✓ Build a fast development loop
    5. ✓ Check your understanding: compose applications

  5. Ship and operate

    Build a focused image, reduce privileges, diagnose failures, and publish a release.

    1. ✓ Build a production image
    2. ✓ Run as a non-root user
    3. ✓ Inspect runtime failures
    4. ✓ Tag, push, and deploy the image
    5. ✓ Check your understanding: ship and operate