Write The Dockerfile

Part of the Introduction to Docker section of Coddy's Terminal journey. Lesson 34 of 40.

Challenge

Easy

Start the greeting app's image. Write a Dockerfile with two lines: FROM alpine and CMD ["echo", "Welcome to the greeting app"]. Then print it back with cat to check it.

Try it yourself

Terminal

docker images alpine

All lessons in Introduction to Docker

1Introduction

What Is Docker Images And Containers

4Managing Containers

Naming Containers Detached Containers Listing All Containers Stopping And Removing Recap - Container Lifecycle

7Files In Images

The COPY Instruction The WORKDIR Instruction Recap - Package It Up

10Greeting App Project

Project OverviewWrite The Dockerfile Project lesson

Build And Run

Personalize The Greeting

Ship A Tagged Version

2Images

Pulling Images Listing Images Tagging Images Recap - Image Wrangler

5Inspecting Containers

Container Logs Inspecting Details Executing Commands Recap - Health Check

8Copying Files

Copy Into A Container Copy Out Of A Container

11Final Challenges

Distro Detective Full Build Pipeline Runtime File Drop

3Running Containers

Running A Command Real Execution Different Distros Auto-Remove Containers Recap - Container Runner

6Building Images

What Is A Dockerfile Building An Image The CMD Instruction Recap - Image Builder

9Volumes & Networks

Volumes Networks Recap - Managing Resources

Practice on your own: Terminal playground