build agent correctly

.gitea/workflows/build-push-agent.yaml

@@ -22,12 +22,15 @@ jobs:
           username: ${{ gitea.actor }}
           password: ${{ secrets.ACTIONS_PUSH_TOKEN }}
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+      - name: Install uv
+        run: |
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          echo "$HOME/.local/bin" >> $GITHUB_PATH
 
-      - name: Build and push
-        uses: docker/build-push-action@v6
-        with:
-          context: ./web/agent
-          push: true
-          tags: git.seaturtle.pw/cavepedia/cavepediav2-agent:latest
+      - name: Build with langgraph
+        working-directory: ./web/agent
+        run: |
+          uv run langgraph build -t git.seaturtle.pw/cavepedia/cavepediav2-agent:latest
+
+      - name: Push image
+        run: docker push git.seaturtle.pw/cavepedia/cavepediav2-agent:latest