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CONTRIBUTING.md

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+# Contributing
+
+Dyad is still a very early-stage project, thus the codebase is rapidly changing.
+
+Before opening a pull request, please open an issue and discuss whether the change makes sense in Dyad. Ensuring a cohesive user experience sometimes means we can't include every possible feature or we need to consider the long-term design of how we want to support a feature area.
+
+For a high-level overview of how Dyad works, please see the [Architecture Guide](./docs/architecture.md). Understanding the architecture will help ensure your contributions align with the overall design of the project.
+
+## More than code contributions
+
+Something that I really appreciate are all the non-code contributions, such as reporting bugs, writing feature requests and participating on [Dyad's sub-reddit](https://www.reddit.com/r/dyadbuilders).
+
+## Development
+
+Dyad is an Electron app.
+
+**Install dependencies:**
+
+```sh
+npm install
+```
+
+**Apply migrations:**
+
+```sh
+npm run db:generate
+npm run db:push
+```
+
+**Run locally:**
+
+```sh
+npm start
+```
+
+## Testing
+
+### Unit tests
+
+```sh
+npm test
+```
+
+### E2E tests
+
+Build the app for E2E testing:
+
+```sh
+npm run pre:e2e
+```
+
+> Note: you only need to re-build the app when changing the app code. You don't need to re-build the app if you're just updating the tests.
+
+Run the whole e2e test suite:
+
+```sh
+npm run e2e
+```
+
+Run a specific test file:
+
+```sh
+npm run e2e e2e-tests/context_manage.spec.ts
+```
+
+Update snapshots for a test:
+
+```sh
+npm run e2e e2e-tests/context_manage.spec.ts -- --update-snapshots
+```