fix: Add additional output (#7)

* fix: Add additional output
* ipv4_address (private)
* ipv4_address (public)

* docs: Generate README.md

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

README.md

@@ -10,7 +10,7 @@ Terraform module to manage the Hetzner Cloud resource (hcloud_server, hcloud_ser
 
 Copy and paste into your Terraform configuration, insert the variables and run ```terraform init```:
 
-**Create one server:**
+**Create one server (only public IP):**
 
 ```hcl
 module "hcloud-server" {
@@ -22,6 +22,22 @@ module "hcloud-server" {
 }
 ```
 
+**Create one server (plus private IP):**
+
+```hcl
+module "hcloud-server" {
+  source = "dhoppeIT/server/hcloud"
+
+  name        = "debian"
+  server_type = "cx11"
+  image       = "debian-10"
+
+  create_server_network = true
+  network_id            = 1331495
+  ip                    = cidrhost("10.0.0.0/24", 2)
+}
+```
+
 **Create multiple servers:**
 
 ```hcl
@@ -32,6 +48,10 @@ module "hcloud-server" {
   name        = format("debian%02d", count.index + 1)
   server_type = "cx11"
   image       = "debian-10"
+
+  create_server_network = true
+  subnet_id             = "1331495-10.0.0.0/24"
+  ip                    = cidrhost("10.0.0.0/24", 10 + count.index)
 }
 ```
 
@@ -90,7 +110,8 @@ No modules.
 | Name | Description |
 |------|-------------|
 | <a name="output_id"></a> [id](#output\_id) | Unique ID of the server |
-| <a name="output_ipv4_address"></a> [ipv4\_address](#output\_ipv4\_address) | The IPv4 address |
+| <a name="output_ipv4_address_private"></a> [ipv4\_address\_private](#output\_ipv4\_address\_private) | The private IPv4 address |
+| <a name="output_ipv4_address_public"></a> [ipv4\_address\_public](#output\_ipv4\_address\_public) | The public IPv4 address |
 | <a name="output_name"></a> [name](#output\_name) | Name of the server |
 
 <!--- END_TF_DOCS --->

outputs.tf

@@ -8,7 +8,12 @@ output "name" {
   value       = hcloud_server.default.name
 }
 
-output "ipv4_address" {
-  description = "The IPv4 address"
+output "ipv4_address_public" {
+  description = "The public IPv4 address"
   value       = hcloud_server.default.ipv4_address
 }
+
+output "ipv4_address_private" {
+  description = "The private IPv4 address"
+  value       = try(hcloud_server_network.default[0].ip, "")
+}