Example of Docker multi-stage build

1. Build the container image

$ docker build -t artemmkin/hello-world:latest .

2. Check the built image size

$ docker images | grep artemmkin/hello-world

artemmkin/hello-world   latest              08e186387598        14 minutes ago       10.1MB

3. Run a container from the image

$ docker run -d -p 8000:8000 --rm --name hello-app artemmkin/hello-world

4. Check that the application works

$ curl localhost:8000

5. Clean up

$ docker stop hello-app

Compare to the one container build

1. Build the container image

$ docker build -t artemmkin/hello-world:latest . -f Dockerfile.onebuild

2. Check the built image size

$ docker images | grep artemmkin/hello-world

artemmkin/hello-world   latest              964ba43fcec3        9 seconds ago       740MB