Docker - A Complete Hands-On Guide - Create Your First Dockerfile

The video tutorial explains the concept of Dockerfile and its use in creating custom Docker images. It demonstrates how to set up a basic Apache web server using a Dockerfile, detailing the commands such as FROM, RUN, COPY, and ENTRYPOINT. The tutorial also covers building Docker images and running containers, addressing common issues like interactive sessions and how to handle them using arguments.

What is the primary purpose of a Dockerfile?

• To monitor Docker performance

• To manage Docker networks

• To create custom Docker images

• To run Docker containers

Which command is used to specify the base image in a Dockerfile?

• COPY

• RUN

• ENTRYPOINT

• FROM

What is the function of the RUN command in a Dockerfile?

• To define the entry point of the container

• To specify the base image

• To execute commands during image build

• To copy files into the image

How does the COPY command function in a Dockerfile?

• It updates the repository

• It installs packages

• It transfers files into the image

• It sets the entry point

What role does the ENTRYPOINT command play in a Dockerfile?

• It specifies the base image

• It runs commands during build

• It copies files into the image

• It defines the first command to execute in a container

What should you do if a Docker build prompts for interactive input?

• Use the RUN command

• Use the COPY command

• Specify ARG DEBIAN_FRONTEND=noninteractive

• Restart the Docker service

Which command is used to build a Docker image from a Dockerfile?

• docker run

• docker start

• docker stop

• docker build