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March 11, 2026 10:01
- Explain why Docker is used in CI pipelines for environment parity, reproducibility, and isolation. - Describe the goal of producing a tagged, versioned image in a container registry. - Detail the three-file setup: Dockerfile, .dockerignore, and GitHub Actions workflow. - Expand on multi-stage Dockerfile best practices and layer caching strategies. - Clarify the workflow from push to pullable image, including authentication and tagging. - Add examples for different ecosystems (Python, Go, Java) and common mistakes to avoid.
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