Docker Certified Associate Certification Training Course - Dockerfile

The video tutorial explains Docker files, which are text files containing instructions to build Docker images. It covers creating custom images using base images like CentOS or Ubuntu, and adding layers such as Apache, PHP, and MySQL. The tutorial details the structure of Docker files, including comments and directives, and emphasizes the importance of Docker Hub for image distribution. Finally, it outlines the process of creating containers from Docker images using Docker build and Docker run commands.

What is the primary function of a Docker file?

• To monitor Docker performance

• To execute Docker containers

• To build Docker images

• To manage Docker networks

Which of the following is a best practice when writing Docker directives?

• Write them in lowercase

• Use camelCase

• Keep them in uppercase

• Use numbers instead of words

What is added to a Docker file to explain individual instructions?

• Variables

• Scripts

• Comments

• Directives

What is the main purpose of Docker Hub?

• To store Docker logs

• To build Docker files

• To distribute Docker images

• To run Docker containers

What command is used to create a container from a Docker image?

• Docker run

• Docker build

• Docker start

• Docker stop