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⚙️ Enhancements to final images building

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This commit is multi-fold and impacts several areas:

- Don't re-generate final artifact locally if already present while
building with `requires_final_images`.
- Expose to CLI a way to build final images without pushing them.
- The packages listed with `requires_final_images` now are evaluated by
  the solver so the full deptree is took into account

Fixes: https://github.com/mudler/luet/issues/294
This commit is contained in:
Ettore Di Giacinto
2022-04-13 18:04:50 +02:00
parent 18881c3283
commit c6170fabd6
5 changed files with 251 additions and 48 deletions
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4
docs/content/en/docs/Concepts/Packages/specfile.md
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@@ -160,7 +160,7 @@ The above keywords cannot be present in the same spec **at the same time**, or t
When specifying `requires_final_images: true` luet builds an artifact for each of the packages listed from their compilation specs and it will later *squash* them together in a new container image which is then used in the build process to create an artifact.
The key difference is about *where* your build is going to run from. By specifying `requires_final_images` it will be constructed a new image with the content of each package - while if setting it to false, it will order the images appropriately and link them together with the Dockerfile `FROM` field. That allows to reuse the same images used to build the packages in the require section - or - create a new one from the result of each package compilation.
The key difference is about *where* your build is going to run from. By specifying `requires_final_images` it will be constructed a new image with the content of each package specified and its dependencies - while if setting it to false, it will order the images appropriately and link them together with the Dockerfile `FROM` field. That allows to reuse the same images used to build the packages in the require section - or - create a new one from the result of each package compilation.
## Keywords
@@ -365,7 +365,7 @@ _since luet>=0.17.0_
(optional) A boolean flag which instruct luet to use the final images in the `requires` field.
By setting `requires_final_images: true` in the compilation spec, packages in the `requires` section will be first compiled, and afterwards the final packages are squashed together in a new image that will be used during build.
By setting `requires_final_images: true` in the compilation spec, packages in the `requires` section and its dependencies will be fetched if available or compiled, and afterwards the result is squashed together in a new image that will be used as a source of the build process of the package.
```yaml
requires: