What components are included in a Docker container?

A Docker container consists of several key components:

• Image — a template containing all the necessary files, libraries, and configurations to run an application. The image is immutable and serves as the basis for creating containers.
• Container filesystem — an isolated filesystem based on the image, where changes can be made during the container's runtime.
• Process(es) — the container runs one or more processes within an isolated environment.
• Network interfaces — the container has its own network settings, which can be isolated or connected to the host.
• Container runtime — software (e.g., Docker Engine) that manages the lifecycle of the container.

Thus, a container is an isolated runtime environment built on an image, with its own filesystem and processes, allowing applications to run in a standardized and portable form.