Fix sandbox npm command (#7176)

Author: skeshive

package.json

@@ -36,7 +36,7 @@
     "test:e2e": "cross-env VERBOSE=true KEEP_OUTPUT=true npm run test:integration:sandbox:none",
     "test:integration:all": "npm run test:integration:sandbox:none && npm run test:integration:sandbox:docker && npm run test:integration:sandbox:podman",
     "test:integration:sandbox:none": "GEMINI_SANDBOX=false vitest run --root ./integration-tests",
-    "test:integration:sandbox:docker": "npm run build:sandbox && GEMINI_SANDBOX=docker vitest run --root ./integration-tests",
+    "test:integration:sandbox:docker": "GEMINI_SANDBOX=docker npm run build:sandbox && GEMINI_SANDBOX=docker vitest run --root ./integration-tests",
     "test:integration:sandbox:podman": "GEMINI_SANDBOX=podman vitest run --root ./integration-tests",
     "lint": "eslint . --ext .ts,.tsx && eslint integration-tests",
     "lint:fix": "eslint . --fix && eslint integration-tests --fix",