Docker
99 bites tagged Docker — interview questions with model answers, and 60-second explainers.
Container Image: A Blueprint for Your Application
A container image is a static blueprint for your application, bundling code, runtime, and settings. You build images to ship software for Docker or Kubernetes, which then run them as live containers.
Dockerfile: The Recipe for Your Container
A Dockerfile is a recipe for building a container image. It's a text file of commands that automates an application's environment setup, ensuring it runs identically anywhere. The footgun is creating bloated images with unnecessary build tools.
Docker Registry: A Library for Your Images
A Docker Registry is like GitHub, but for Docker images. It's a centralized storage system where you push and pull images, enabling sharing and deployment. The biggest footgun is using the `:latest` tag, which can lead to unpredictable builds.
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