Containerize Spring Boot CRUD App with Docker and Docker Compose - Docker Working Workflow

The video tutorial provides an introduction to Docker, explaining the roles of Dockerfile, Docker images, and Docker containers. It covers the process of creating Docker images from Dockerfiles, storing them in registries like Docker Hub, and running them as containers. The tutorial also discusses the scalability and modularity of Docker containers, as well as the communication between containers. Key concepts include the isolation of containers and the ability to run applications consistently across different environments.

What is the primary purpose of a Dockerfile?

• To execute application code

• To manage network configurations

• To define instructions for building a Docker image

• To store application data

What does a Docker image contain?

• The application code, dependencies, and configurations

• Only the configuration files

• Only the application code

• Just the runtime environment

How can Docker images be versioned?

• By renaming the Dockerfile

• By running the Docker build command again

• By creating a new Dockerfile

• By changing the application code

Where can Docker images be stored for public access?

• GitHub repository

• Private cloud storage

• Docker Hub registry

• Local file system

What is the role of a Docker container?

• To compile application code

• To manage network traffic

• To run instances of Docker images

• To store Docker images

How do Docker containers achieve scalability?

• By reducing memory usage

• By running multiple instances of the same Docker image

• By increasing the size of the Docker image

• By using more CPU resources

How can Docker containers communicate with each other?

• Via well-defined channels

• Through shared file systems

• Through direct memory access

• By using the same Dockerfile