ci(release): Build container image with PyPI package

Adds the build args to use the PowerAPI package published on PyPI when
building the release container image. This allow to have reproducible
builds and check the provenance attestation of the installed package.

Author: gfieni

.github/workflows/release.yml

@@ -110,7 +110,7 @@ jobs:
   docker-image:
     name: Publish Docker image
     runs-on: ubuntu-latest
-    needs: [pre-checks]
+    needs: [pre-checks, publish-python-package]
     permissions:
       contents: read
       packages: write
@@ -154,6 +154,9 @@ jobs:
           platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            POWERAPI_INSTALL_METHOD=pypi
+            POWERAPI_VERSION=${{ steps.meta.outputs.version }}
 
   github-release:
     name: Publish GitHub release