Dockerfile

A Dockerfile is a text document that contains a set of instructions to automatically create a Docker image, which is like a portable, self-contained package of software and its environment. It specifies everything needed—such as operating system, libraries, and application code—so that the software can run consistently across different computers or servers. Think of it as a recipe that, when executed, builds a ready-to-use container, ensuring reliable deployment and easy sharing of software setups without manual configuration.