docs: better explain the native integration

docs/Configuration.md

@@ -15,6 +15,7 @@ You can configure Headplane using environment variables.
 - **`CONFIG_FILE`**: The path to the Headscale `config.yaml` (default: `/etc/headscale/config.yaml`).
 - **`HEADSCALE_CONFIG_UNSTRICT`**: This will disable the strict configuration loader (default: `false`).
 - **`COOKIE_SECURE`**: This option enables the `Secure` flag for cookies, ensuring they are sent only over HTTPS, which helps prevent interception and enhances data security. It should be disabled when using HTTP instead of HTTPS (default: `true`).
+- **`LOAD_ENV_FILE`**: Tell Headplane to read the `.env` file and load it into the environment (default: `false`).
 
 #### Docker Integration
 The Docker integration allows Headplane to manage the Headscale docker container.

docs/integration/Native.md

@@ -10,19 +10,60 @@ to undefined behavior or the service not restarting.
 
 ### Deployment
 
-Follow the instructions to install Headscale from the
-[Linux Installation Guide](https://headscale.net/running-headscale-linux/). As
-of now, Headplane requires Node.js 20 to be installed on the system. Once you
-are ready, clone the repository (`git clone https://github.com/tale/headplane`),
-install dependencies (`npm install`), build the project (`npm run build`), and
-start the server (`npm start`).
+1. Follow the instructions to install Headscale from the
+[Linux Installation Guide](https://headscale.net/setup/install/official).
+
+2. Install [Node.js](https://nodejs.org/en/download/package-manager)
+version 20 or higher (your package manager most likely already has this).
+
+3. Install [PNPM](https://pnpm.io/installation). This is required
+as Headplane has issues running correctly when installed and built via NPM or Yarn.
+
+4. Clone the Headplane repository, install dependencies, and build the project:
+```sh
+git clone https://github.com/tale/headplane # (or clone via SSH)
+cd headplane
+pnpm install
+pnpm build
+```
+
+### Running Headplane
+Start Headplane with `node build/headplane/server.js`.
+
+Headplane does need various environment variables to run correctly. The required
+variables can be found in the [Configuration](/docs/Configuration.md) guide.
+If you choose to do this with a `.env` file, you can use the `LOAD_ENV_FILE`
+variable to tell Headplane to load the file.
+
+Finally, make sure to set `HEADSCALE_INTEGRATION=proc` to take advantage
+of controlling Headscale natively on Linux.
+
+```sh
+LOAD_ENV_FILE=true node ./build/headplane/server.js
+```
 
 > If you'd like, you can turn this into a `systemd` unit to manage the service.
 > I plan to provide packages and unit files to make this easier in the future.
 
-When running Headplane, you'll need to set environment variables to configure
-the application. The `HEADSCALE_INTEGRATION` variable should be set to `proc`.
+### Cannot find ./build directory?
+Headplane expects the `build` directory to be present when running the server.
+The structure of this folder is very important and should not be tampered with.
+If you would like to keep the build directory in a different location, you can
+set the `BUILD_PATH` environment variable to the path of the build directory
+at runtime.
 
-> For a breakdown of each configuration variable, please refer to the
-[Configuration](/docs/Configuration.md) guide. 
-> It explains what each variable does, how to configure them, and what the default values are.
+```sh
+LOAD_ENV_FILE=true BUILD_PATH=/path/to/build node ./build/headplane/server.js
+```
+
+### Changing Headplane's Path from `/admin`
+Additionally, because you are building Headplane from source, you're able to
+change the default path that Headplane is served from. This can be done by
+specifying the `__INTERNAL_PREFIX` environment variable, when building.
+
+```sh
+__INTERNAL_PREFIX=/my-admin-path pnpm build
+```
+
+> Keep in mind that this is very much an experimental feature. Things can easily
+> break and until it's more stable, it's not recommended to use in production.