What Is Dockerfile?
A text file containing instructions to build a Docker image.
Definition
A text file containing instructions to build a Docker image.
Defines the base OS, installed packages, environment variables, and commands needed to set up a container.
Where This Fits
This term is covered in depth on DevContainers Guide.
Guide to DevContainers: Configure devcontainer.json, Docker Compose, VS Code, JetBrains, Zed, AI agent workspaces, and GitHub Codespaces.