docs: Updated environment variable docs

docs/deployments/environment-variables.mdx

@@ -5,7 +5,7 @@ title: Environment Variables
 # Environment Variables
 
 Environment variables are a set of named values that can affect the way running processes will behave on a deployment. An environment variable can be used to store secret values that are not safe to be stored in the codebase. You may wish to use
-different values for different environments, such as development, preview, and production to connect to different databases or API endpoints.
+different values for different environments, such as preview, and production to connect to different databases or API endpoints.
 
 ## Creating environment variables
 
@@ -17,18 +17,41 @@ Enter the name and value of your variable. All values are encrypted, and can onl
 
 It is also possible to specify what environments the variable should be available in.
 
+<Warning>
+After creating or deleting an environment variable, you will need to redeploy your project for the changes to take effect.
+</Warning>
+
 ## Accessing environment variables
 
-Within your Dart code, you can access environment variables using the `Platform.environment` map.
+Within your Dart code, you can access environment variables using the `Platform.environment` map. Any package that uses this map can access Globe environment variables as well.
 
 ```dart
 String? value = Platform.environment['MY_VARIABLE'];
 ```
 
+### Using "dotenv" package
+
+If you prefer to use a `.env` file for local development, you can use the [dotenv package](https://pub.dev/packages/dotenv) to load values from the `.env` file locally and use environment variables when deployed.
+
+When your app is deployed to Globe, any static assets are ignored, so you need to pass `includePlatformEnvironment: true` to the `DotEnv` constructor to include platform environment variables that you previously defined on Globe dashboard (Project > Settings > Environment variables).
+
+```dart
+final env = DotEnv(includePlatformEnvironment: true)..load();
+String? value = env['MY_VARIABLE'];
+```
+
 ## System environment variables
 
-The following environment variables are available on all deployments:
+Your deployed Dart application has access to the Globe-specific environment variables which wouldn't be typically available while you develop/test your app locally. These are available on all deployments:
 
 | Name   | Description                                     |
 | ------ | ----------------------------------------------- |
 | `PORT` | The port that the application should listen on. |
+| `GLOBE` | Variable for checking if running in Globe. Will be set to '1' |
+| `HOSTNAME` | The hostname of your deployed application in Globe. |
+| `CRON_NAME` | Name of the cron job provided in the `globe.yaml` file. |
+| `CRON_SCHEDULE` | The cron schedule code. For example, `* * * * *` |
+| `CRON_ID` | Unique identifier for the defined cron job. |
+| `CRON_EVENT_ID` | Unique identifier for the current running cron job. |
+
+* Cron environment variables are only available when a cron job is running.