This patch release only affects a new project creation via yarn create redwood-app ..., resolving the missing .gitignore file in the codebase. See #2310
Upgrading projects created at Redwood v0.30.0
If you created your project at Redwood v0.30.0, you are most likely missing .gitignore in the root directory. Create the file and copy the contents from this reference template/.gitignore