feat: add step to generate PEP 440 version and update build-args to use it

.gitea/workflows/cicd.yml

@@ -62,6 +62,15 @@ jobs:
             type=raw,value=latest,enable={{is_default_branch}}
             type=ref,event=tag
 
+      - name: Determine PEP 440 Version for Python Package
+        id: pkg_version
+        run: |
+          if [[ "${{ github.ref }}" == refs/tags/v* ]]; then
+            echo "version=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
+          else
+            echo "version=0.0.dev${{ github.run_number }}" >> $GITHUB_OUTPUT
+          fi
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v4
 
@@ -70,7 +79,7 @@ jobs:
         with:
           context: .
           push: true
-          build-args: VERSION=${{ steps.meta.outputs.version }}
+          build-args: VERSION=${{ steps.pkg_version.outputs.version }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache