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Build And Run

Part of the Introduction to Docker section of Coddy's Terminal journey — lesson 35 of 40.

Challenge

Medium

Now turn the Dockerfile into a real image and run it. Run these commands one after the other:

Write the Dockerfile again: FROM alpine and CMD ["echo", "Welcome to the greeting app"]
Build it tagged greetapp
Run greetapp so its CMD greeting prints

Try it yourself

Terminal

cat > Dockerfile << 'EOF'
FROM alpine
CMD ["echo", "Welcome to the greeting app"]
EOF
cat Dockerfile

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 Overview Write The Dockerfile

Project lesson

Build And Run Project lesson

Project lesson

Personalize The Greeting

Project lesson

Ship A Tagged Version

Project lesson

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