• What is Docker and why do we need it?
• Container vs Virtual Machine: what is the difference?
• What are the main components of Docker architecture?
• Docker daemon and Docker client: how do they interact?
• How to push and pull images on Docker Hub?
• Docker layers and Union File System explained
• Docker registry vs Docker Hub: what is the difference?
• What is a Docker container?
• What is a Docker image?
• What is a Dockerfile?
• What are dangling Docker images and how to remove them?
• What is the Docker container lifecycle?
• Docker volume vs bind mount: what is the difference?
• CMD vs ENTRYPOINT in Dockerfile: what is the difference?
• COPY vs ADD in Dockerfile: what is the difference?
• How to get inside a running Docker container?
• How to inspect container state, logs, and metadata?
• How to list running and all Docker containers?
• How to run a container from a Docker image?
• How to stop and remove a Docker container?
• What is Docker Compose?
• What is a Docker volume and why do you need it?
• How to debug problems in a Docker container?
• How does Docker bridge networking work?
• How does Docker build cache work and how to manage it?
• How do containers communicate in Docker Compose?
• How to manage service dependencies in Docker Compose?
• How to set up a health check for a Docker container?
• How to limit container CPU and memory resources?
• What is a multi-stage Docker build and why use it?