change gcp deploy to run commands directly instead of using alias

.github/workflows/gcp-deploy-staging.yml

@@ -22,9 +22,16 @@ jobs:
       - name: Deploy to GCP
         run: |
           ssh -i ~/.ssh/private.key ${{ secrets.GCP_STAGING_USERNAME }}@${{ secrets.GCP_STAGING_HOST }} << 'EOF'
-            # Stop existing container (if running)
-            staging_stop || true
-            
-            # Start new container
-            staging_start
+            # Stop and remove any existing container
+            docker stop sourcebot-staging || true
+            docker rm sourcebot-staging || true
+
+            # Run new container
+            docker run -d \
+              -p 80:3000 \
+              --pull always \
+              --env-file .env.staging \
+              -v /mnt/data:/data \
+              --name sourcebot-staging \
+              ghcr.io/sourcebot-dev/sourcebot:staging
           EOF