Build Image

Lets build and run a simple image. First we create a Dockerfile file that will serve as a definition of our image. We are using hello-world image as our base image.

FROM hello-world

MAINTAINER Ondrej Kvasnovsky <[e-mail]>

Now we can build the image.

docker build -f Dockerfile -t demo/hello-world .

We must be able to see the new image in the list of available images.

➜  demo docker images
REPOSITORY                                           TAG                   IMAGE ID            CREATED             SIZE
demo/hello-world                                     latest                095848a4f47f        3 minutes ago       1.85kB

Once the image is available, we can run the image and that way, create a container. A container is a running instance of an image.

➜ demo docker run demo/hello-world

Hello from Docker!
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