Docker Dockerfile and Docker Compose 2020 Ready - A Sample Development Environment (PHP/Apache/MySQL) using docker-compo

The video tutorial covers setting up a PHP Apache environment with a MySQL database using Docker Compose. It explains defining multiple services, using environment variables, and accessing Docker Hub for configurations. The tutorial also addresses troubleshooting MySQL authentication issues, emphasizes the importance of version control, and demonstrates monitoring container logs. Finally, it introduces data persistence in Docker, highlighting the need for mounted volumes to retain database data across container restarts.

What is the purpose of defining environment variables in a Docker Compose file for MySQL?

• To allocate memory for MySQL

• To set the root password for MySQL

• To specify the port number for MySQL

• To define the container name for MySQL

Why is it important to specify a specific MySQL version in Docker Compose?

• To ensure compatibility with PHP

• To improve the performance of MySQL

• To reduce the size of the Docker image

• To avoid authentication issues

What does the '-d' flag do when running 'docker-compose up'?

• Deletes existing containers

• Displays detailed logs

• Runs the containers in detached mode

• Downloads the latest images

How can you view logs for a specific container in Docker Compose?

• By using 'docker-compose logs '

• By opening the Docker dashboard

• By checking the system logs

• By using 'docker-compose ps'

What is the main reason for using volume mounts in Docker?

• To improve network performance

• To reduce the size of the Docker image

• To ensure data persistence

• To increase the speed of container startup

What happens to the database data if containers are removed without volume mounts?

• The data is saved in a temporary file

• The data is lost

• The data is transferred to another container

• The data is automatically backed up

What command is used to remove all containers defined in a Docker Compose file?

• docker-compose delete

• docker-compose stop

• docker-compose down

• docker-compose rm