Coerce types to match when dealing with ties

Also add a rudimentary publication workflow, as I'm migrating away from
Drone - see [here](https://blog.scubbo.org/posts/gitea-actions/).

.gitea/workflows/publish.yaml

@@ -0,0 +1,50 @@
+name: Publish
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Import Secrets
+        id: import-secrets
+        uses: hashicorp/vault-action@v2
+        with:
+          url: http://vault.avril
+          method: kubernetes
+          # TODO - when https://github.com/go-gitea/gitea/pull/33945 is merged, instead use per-workflow OIDC-based auth
+          role: act-runner-helm-charts
+          secrets: |
+            shared-secrets/gitea/pat_to_push_images token | GITEA_TOKEN
+
+      - name: Login to Gitea
+        uses: docker/login-action@v3
+        with:
+          username: scubbo
+          password: ${{ env.GITEA_TOKEN }}
+
+      - name: Setup QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Setup Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build and push image
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: Dockerfile
+          target: prod
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: |
+            scubbo/edh-elo:${{ gitea.sha }}
+            scubbo/edh-elo:latest
+
+      - name: Output
+        run: |
+          echo "Image pushed: scubbo/edh-elo:${{ gitea.sha }}"
+
+      # TODO - update Helm chart with new image

app/routers/games.py

@@ -54,7 +54,7 @@ def create_game(game: schemas.GameCreate, db: Session = Depends(get_db)):
     if game.other_winning_deck_ids:
         winning_deck_ids.extend(
             [
-                deck_ids.index(other_winning_id)
+                deck_ids.index(int(other_winning_id))
                 for other_winning_id in game.other_winning_deck_ids.split(",")
             ]
         )