Dockerfile vs Earthly Build File: Which Should You Use?
Side-by-side comparison of Dockerfile and Earthly Build File data formats — features, pros, cons, and conversion options.
Dockerfile is best for Building reproducible container images for application deployment. Earthly Build File is best for Reproducible build pipelines that work identically locally and in CI.
Quick Verdict
- ✓ Standard for container image building
- ✓ Layer caching for fast rebuilds
- ✓ Massive ecosystem and documentation
- ✗ Each instruction creates a layer (size bloat)
- ✓ Combines Dockerfile and Makefile concepts
- ✓ Reproducible CI/CD builds locally and in CI
- ✓ Built-in caching and parallelism
- ✗ Requires Earthly CLI installation
Specs Comparison
Side-by-side technical comparison of Dockerfile and Earthly Build File
| Feature | Dockerfile | Earthly Build File |
|---|---|---|
| Category | Data | Data |
| Year Introduced | 2013 | 2020 |
| MIME Type | text/plain | text/plain |
| Extensions | .dockerfile, .Dockerfile | .earthfile, .Earthfile |
| Plain Text | ✓ | ✓ |
| Typed | ✗ | ✗ |
| Nested | ✗ | ✓ |
| Human Readable | ✓ | ✓ |
| Schema Support | ✗ | ✗ |
| Streaming | ✗ | ✗ |
| Binary Efficient | ✗ | ✗ |
Pros & Cons
Dockerfile
- ✓ Standard for container image building
- ✓ Layer caching for fast rebuilds
- ✓ Massive ecosystem and documentation
- ✗ Each instruction creates a layer (size bloat)
- ✗ No built-in secret management
- ✗ Limited logic and control flow
Earthly Build File
- ✓ Combines Dockerfile and Makefile concepts
- ✓ Reproducible CI/CD builds locally and in CI
- ✓ Built-in caching and parallelism
- ✗ Requires Earthly CLI installation
- ✗ Smaller community than Docker or Make
- ✗ Additional abstraction layer to learn
When to Use Each
Choose Dockerfile when...
- You need files optimized for Building reproducible container images for application deployment
- Standard for container image building
- Layer caching for fast rebuilds
Choose Earthly Build File when...
- You need files optimized for Reproducible build pipelines that work identically locally and in CI
- Combines Dockerfile and Makefile concepts
- Reproducible CI/CD builds locally and in CI
How to Convert
Convert between Dockerfile and Earthly Build File for free on ChangeThisFile
Frequently Asked Questions
Dockerfile is best for Building reproducible container images for application deployment, while Earthly Build File is best for Reproducible build pipelines that work identically locally and in CI. Both are data formats but they differ in compression, compatibility, and intended use cases.
It depends on your use case. Dockerfile is better for Building reproducible container images for application deployment. Earthly Build File is better for Reproducible build pipelines that work identically locally and in CI. Consider your specific requirements when choosing between them.
Direct conversion from Dockerfile to Earthly Build File is not currently available on ChangeThisFile. You may need to use an intermediate format.
Yes. ChangeThisFile supports Earthly Build File to Dockerfile conversion. Upload your file for server-side conversion — files are auto-deleted after processing.
File size varies depending on the content, compression method, and quality settings of each format. In general, lossy formats produce smaller files than lossless ones. Test with your specific files to compare actual sizes.
No, Dockerfile does not support nested, whereas Earthly Build File does. This may be an important factor depending on your use case.
Both Dockerfile and Earthly Build File are supported file formats that are free to use. You can convert between them for free on ChangeThisFile — server-side conversions are free with no signup required.
Earthly Build File is newer — it was introduced in 2020, while Dockerfile dates back to 2013. Newer formats often offer better compression and features, but older formats tend to have wider compatibility.
Related Comparisons
Ready to convert?
Convert between Dockerfile and Earthly Build File instantly — free, no signup required.
Start Converting