fix: Wait for PyPI upload before building Docker image

Use workflow_run trigger to wait for "Upload Python Package" workflow
to complete successfully before building the Docker image. This ensures
the version is available on PyPI when uv tries to install it.

.github/workflows/docker.yml

@@ -1,8 +1,9 @@
 name: Build and Push Docker Image
 
 on:
-  release:
-    types: [published]
+  workflow_run:
+    workflows: ["Upload Python Package"]
+    types: [completed]
   workflow_dispatch:
     inputs:
       version:
@@ -16,6 +17,8 @@ env:
 jobs:
   build-and-push:
     runs-on: ubuntu-latest
+    # Only run if PyPI upload succeeded (or manual dispatch)
+    if: ${{ github.event_name == 'workflow_dispatch' || github.event.workflow_run.conclusion == 'success' }}
     permissions:
       contents: read
       packages: write
@@ -37,8 +40,9 @@ jobs:
       - name: Extract version
         id: version
         run: |
-          if [ "${{ github.event_name }}" = "release" ]; then
-            VERSION="${{ github.event.release.tag_name }}"
+          if [ "${{ github.event_name }}" = "workflow_run" ]; then
+            # Get version from the tag that triggered the release
+            VERSION="${{ github.event.workflow_run.head_branch }}"
             # Strip 'v' prefix if present
             VERSION="${VERSION#v}"
           elif [ -n "${{ github.event.inputs.version }}" ]; then
@@ -54,10 +58,10 @@ jobs:
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
-            type=semver,pattern={{version}}
-            type=semver,pattern={{major}}.{{minor}}
-            type=semver,pattern={{major}}
-            type=raw,value=latest,enable={{is_default_branch}}
+            type=semver,pattern={{version}},value=v${{ steps.version.outputs.version }}
+            type=semver,pattern={{major}}.{{minor}},value=v${{ steps.version.outputs.version }}
+            type=semver,pattern={{major}},value=v${{ steps.version.outputs.version }}
+            type=raw,value=latest
 
       - name: Build and push
         uses: docker/build-push-action@v6