alexanderschmi commented on PR #2274:
URL: https://github.com/apache/systemds/pull/2274#issuecomment-3048316537
# Dockerfile Refactoring: `latest` & `testing-latest`
## Summary
This pull request refactors the two main Docker images of SystemDS —
`latest` and `testing-latest` — with the goal of reducing image size, improving
build efficiency, and modernizing the base images.
---
## Changes in Detail
### `latest`
- Switched from Ubuntu to Alpine
→ The base operating system was changed to Alpine Linux to significantly
reduce image size.
→ All package installations were adapted to use `apk`, and unnecessary
dependencies were removed.
- Minimal, production-oriented setup
→ Only essential runtime dependencies are included
→ Usage of jre instead of jdk in final image because of multi-stage
approach
→ Integration of native hadoop library
### `testing-latest`
- Switched from Ubuntu to debian:bullseye-slim
→ The operating system was changed to reduce image size.
- Migrated to a multi-stage build
→ The previous single-stage build was replaced with a multi-stage setup
→ The final testing image is smaller
- Fully functional test environment
→ All unit and integration tests run as before
→ CI integration remains fully compatible
---
## Results
- `latest`:
- smaller due to Alpine base (from 1.5 GiB to 460 MiB → reduced by 1.1
GB)
- more secure through Alpine base and a default non-root user
- `testing-latest`:
- smaller due to bullseye-slim base (from 1.7 GiB to 1.4 GiB → reduced
by 325 MB)
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