docs: solidify DOCKER_SOCK and ROOT_API_KEY usage

docs/Advanced-Integration.md

@@ -30,10 +30,14 @@ The ACL file path is read from the following sources in order of priority:
 
 The Docker integration can be used to automatically reload the configuration or ACLs when they are changed.
 In order for this to work, you'll need to pass in the `HEADSCALE_CONTAINER` environment variable.
-You'll also need to ensure that `/var/run/docker.sock` is mounted if Headplane is running in a container.
 This should be either the name or ID of the Headscale container (you can retrieve this using `docker ps`).
 If the other integrations aren't setup, then Headplane will automatically disable the Docker integration.
 
+By default the integration will check for `/var/run/docker.sock`, however you can override this by
+setting the `DOCKER_SOCK` environment variable if you use a different configuration than the default.
+When setting `DOCKER_SOCK`, you'll need to include the protocol (e.g., `unix://` or `tcp://`).
+Headplane currently does not support the HTTPS protocol for the Docker socket.
+
 ## Deployment
 
 Requirements:
@@ -85,7 +89,7 @@ services:
       # This NEEDS to be set with OIDC, regardless of what's in the config
       # This needs to be a very long-lived (999 day) API key used to create
       # shorter ones for OIDC and allow the OIDC functionality to work
-      API_KEY: 'abcdefghijklmnopqrstuvwxyz'
+      ROOT_API_KEY: 'abcdefghijklmnopqrstuvwxyz'
 ```
 
 > For a breakdown of each configuration variable, please refer to the [Configuration](/docs/Configuration.md) guide. 

docs/Basic-Integration.md

@@ -31,8 +31,7 @@ services:
       COOKIE_SECRET: 'abcdefghijklmnopqrstuvwxyz'
 
       # These are all optional!
-      HEADSCALE_CONTAINER: 'headscale'
-      API_KEY: 'abcdefghijklmnopqrstuvwxyz'
+      ROOT_API_KEY: 'abcdefghijklmnopqrstuvwxyz'
       OIDC_CLIENT_ID: 'headscale'
       OIDC_ISSUER: 'https://sso.example.com'
       OIDC_CLIENT_SECRET: 'super_secret_client_secret'

docs/Configuration.md

@@ -13,6 +13,14 @@ You can configure Headplane using environment variables.
 - **`PORT`**: The port to bind the server to (default: `3000`).
 - **`CONFIG_FILE`**: The path to the Headscale `config.yaml` (default: `/etc/headscale/config.yaml`).
 - **`ACL_FILE`**: The path to the ACL file (default: `/etc/headscale/acl_policy.json`, not needed if you have `acl_policy_path` in your config).
+
+#### Docker Integration
+The Docker integration allows Headplane to manage the Headscale docker container.
+You'll need to provide these variables if you want to use this feature.
+Keep in mind that `DOCKER_SOCK` must start with a protocol (e.g., `unix://`).
+Secure API is currently not supported.
+
+- **`DOCKER_SOCK`**: The protocol and path to the Docker socket (default: `unix:///var/run/docker.sock`).
 - **`HEADSCALE_CONTAINER`**: The name of the Headscale container (required for Docker integration).
 
 ### SSO/OpenID Connect
@@ -23,7 +31,7 @@ If you use the Headscale configuration integration, these are not required.
 - **`OIDC_ISSUER`**: The issuer URL of your OIDC provider.
 - **`OIDC_CLIENT_ID`**: The client ID of your OIDC provider.
 - **`OIDC_CLIENT_SECRET`**: The client secret of your OIDC provider.
-- **`API_KEY`**: An API key used to issue new ones for sessions (keep expiry fairly long).
+- **`ROOT_API_KEY`**: An API key used to issue new ones for sessions (keep expiry fairly long).
 - **`DISABLE_API_KEY_LOGIN`**: If you want to disable API key login, set this to `true`.
 
 Here's what an example with Authelia would look like if you used the same client for both Headscale and Headplane.