Docker Dockerfile and Docker Compose 2020 Ready - Write your first Dockerfile Step-By-Step Explained for Beginners

The video tutorial explains how to create and manage Docker images using PHP 7.2. It covers the creation of a Dockerfile, building and running Docker images, and managing images and containers. The tutorial also highlights the importance of understanding static projects within Docker and provides a brief overview of future topics.

What is the primary purpose of a Dockerfile?

• To compile source code

• To manage network configurations

• To define the steps to build a Docker image

• To create a new programming language

Which command is used to start a Dockerfile?

• FROM

• COPY

• CMD

• RUN

What is the role of the 'COPY' command in a Dockerfile?

• To copy files from the host to the image

• To execute a command

• To remove files from the image

• To set environment variables

What does the 'docker build' command do?

• It lists all Docker images

• It builds a Docker image from a Dockerfile

• It removes a Docker image

• It runs a Docker container

Why might a Docker image be large in size?

• Due to excessive logging

• Due to unused variables

• Because of network configurations

• Because of the base image size

What happens to the files inside a Docker image when the container is removed?

• They are deleted permanently

• They remain inside the image

• They are moved to a backup location

• They are archived

How can you remove a Docker image?

• Using the 'docker delete' command

• Using the 'docker remove' command

• Using the 'docker rmi' command

• Using the 'docker clean' command