Docker Hello World

This repo follows The Ultimate Docker Course by Mosh Hamedani. This repo contains a Dockerfile and JS application which prints Hello World! to the console. This README.md gives instructions on how to use Docker to create and use an image for this JS application.

Docker version

To check the Docker version, run docker version

Create Docker Image

While inside the repo parent directory, run

docker build -t hello-docker .

-t hello-docker assigns a tag

. tells docker where to find a Dockerfile

Check that the image was made by running

docker images or docker image ls

This image contains Alpine OS, node, and our application files

Run Image

Run the image

docker run hello-docker
>>> Hello World!

At this point we have run the image in our local machine.

Push to Docker Hub

Pull from Docker Hub

An identical image was published by Mosh Hamedani, which we now use here.

To pull the image run docker pull codewithmosh/hello-docker Verify by running docker images

To run the image, run docker run codewithmosh/hello-docker

Play With Docker

To test this on a remote machine, let's use an instance from Play With Docker. So pull and run the image as described in the previous section.

Note: you can maximize the console by hitting Alt+Enter, and again to minimize the console.