add v4-beta package version warning

Author: nicktrn

docs/self-hosting/docker.mdx

@@ -345,6 +345,10 @@ TRIGGER_IMAGE_TAG=v4.0.0-v4-beta.21
 
 This section highlights some of the CLI commands and options that are useful when self-hosting. Please check the [CLI reference](/cli-introduction) for more in-depth documentation.
 
+<Note>
+While v4 is in beta, always use `@v4-beta` instead of `@latest`. For example: `npx trigger.dev@v4-beta dev`
+</Note>
+
 ### Login
 
 To avoid being redirected to [Trigger.dev Cloud](https://cloud.trigger.dev) when using the CLI, you need to specify the URL of your self-hosted instance with the `--api-url` or `-a` flag. For example:

docs/self-hosting/kubernetes.mdx

@@ -69,6 +69,17 @@ kubectl port-forward svc/trigger-webapp 3040:3030 -n trigger
 
 3. Open the dashboard: `http://localhost:3040`
 
+4. Login with the magic link:
+
+```bash
+# Check the webapp logs
+kubectl logs -n trigger deployment/trigger-webapp | grep -A1 "magic link"
+```
+
+<Note>
+While v4 is in beta, always use `@v4-beta` instead of `@latest`. For example: `npx trigger.dev@v4-beta dev`
+</Note>
+
 ## Configuration
 
 The default installation uses insecure secrets and is only suitable for testing. You _will_ need to configure your own secrets as a bare minimum.