Interview Questions and Answers

Docker Swarm and Kubernetes are both orchestration tools for managing containerized applications. Kubernetes is more feature-rich and widely adopted, while Docker Swarm is simpler to set up and use for smaller deployments.

The HEALTHCHECK instruction adds a health check to a Docker image. It allows you to define a command to check the health of a running container and provide feedback to Docker.

Example:

HEALTHCHECK --interval=5m --timeout=3s CMD curl -f http://localhost/ || exit 1

Docker Orchestration involves the automated coordination and management of multiple containers to ensure they work together seamlessly. It includes tools like Docker Swarm and Kubernetes.