Building and running a container on a local machine

So far in the chapter, we have discussed Docker elements and have looked at an example of a Dockerfile that is used to containerize a web application. Now, we have all the elements to run Docker.

The execution of Docker is performed by different operations, as outlined here:

• Building a Docker image from a Dockerfile
• Instantiating a new container locally from this image
• Testing our locally containerized application

Let's take a deep dive into each operation.

Building a Docker image

We'll build a Docker image from our previously created Dockerfile that contains the following instructions:

FROM httpd:latest
COPY index.html /usr/local/apache2/htdocs/

We'll go to a terminal to head into the directory that contains the Dockerfile, and then execute the docker build command with the following syntax:

docker build -t demobook:v1 .

The -t argument indicates the name of the image and...