Improving the civo instance documentation. Fixes issue #289 (#299)

Co-authored-by: Fernando Villalba <fernando@civo.com>

docs/resources/instance.md

@@ -12,19 +12,81 @@ Provides a Civo instance resource. This can be used to create, modify, and delet
 
 ## Example Usage
 
+* View instances after creation on the [CLI](https://www.civo.com/docs/overview/civo-cli):
+```
+civo instances ls
+```
+* View instances after creation on the [Dashboard](https://dashboard.civo.com/instances)
+* View node sizes on [CLI](https://www.civo.com/docs/overview/civo-cli):
+
+```
+civo instances size
+```
+
+### Simple and smallest instance with its own network
+
 ```terraform
-# Query small instance size
-data "civo_instances_size" "small" {
-    filter {
+provider "civo" {
+  region = "LON1"
+}
+
+resource "civo_firewall" "example" {
+    name = "example-firewall"
+    create_default_rules = true
+    network_id = civo_network.example.id
+
+}
+
+resource "civo_network" "example" {
+  label = "example-network"
+
+}
+
+# Query instance disk image
+data "civo_disk_image" "debian" {
+   filter {
         key = "name"
-        values = ["g3.small"]
-        match_by = "re"
-    }
+        values = ["debian-10"]
+   }
+}
+
+# Create a new instance
+resource "civo_instance" "example" {
+    hostname = "example"
+    tags = ["example", "documentation"]
+    notes = "This is an example instance"
+    firewall_id = civo_firewall.example.id
+    network_id = civo_network.example.id
+    size = "g3.xsmall"
+    disk_image = data.civo_disk_image.debian.diskimages[0].id
+}
+```
+
+With this configuration, an initial password for the instance gets written to the state on output `initial_password` which you can use to access the instance.
+
+Alternative you can get the password with the [CLI](https://www.civo.com/docs/overview/civo-cli):
 
-    filter {
-        key = "type"
-        values = ["instance"]
-    }
+```
+civo instances show example
+```
+
+### Instance with ssh login
+
+```terraform
+
+provider "civo" {
+  region = "LON1"
+}
+
+resource "civo_firewall" "example" {
+    name = "example-firewall"
+    create_default_rules = true
+    network_id = civo_network.example.id
+
+}
+
+resource "civo_network" "example" {
+  label = "example-network"
 
 }
 
@@ -36,18 +98,30 @@ data "civo_disk_image" "debian" {
    }
 }
 
+# To create the example key, run this command:
+# ssh-keygen -f ~/.ssh/example-tf -C "terraform-example@localmachine"
+
+resource "civo_ssh_key" "example"{
+    name = "example"
+    public_key = file("~/.ssh/example-tf.pub")
+}
+
 # Create a new instance
-resource "civo_instance" "foo" {
-    hostname = "foo.com"
-    tags = ["python", "nginx"]
-    notes = "this is a note for the server"
-    size = element(data.civo_instances_size.small.sizes, 0).name
-    disk_image = element(data.civo_disk_image.debian.diskimages, 0).id
+resource "civo_instance" "example" {
+    hostname = "example"
+    tags = ["example", "documentation"]
+    notes = "This is an example instance"
+    sshkey_id = civo_ssh_key.example.id
+    firewall_id = civo_firewall.example.id
+    network_id = civo_network.example.id
+    size = "g3.xsmall"
+    disk_image = data.civo_disk_image.debian.diskimages[0].id
 }
+
 ```
 
-<!-- schema generated by tfplugindocs -->
-## Schema
+
+## Argument Reference
 
 ### Required
 
@@ -69,10 +143,17 @@ resource "civo_instance" "foo" {
 - `size` (String) The name of the size, from the current list, e.g. g3.xsmall
 - `sshkey_id` (String) The ID of an already uploaded SSH public key to use for login to the default user (optional; if one isn't provided a random password will be set and returned in the initial_password field)
 - `tags` (Set of String) An optional list of tags, represented as a key, value pair
-- `template` (String, Deprecated) The ID for the template to use to build the instance
-- `timeouts` (Block, Optional) (see [below for nested schema](#nestedblock--timeouts))
+- `timeouts` (Block, Optional) (see [below for nested schema](#nestedblock--timeouts)) defines timeouts for cluster creation, read and update, default is 30 minutes for all
 
-### Read-Only
+
+<a id="nestedblock--timeouts"></a>
+### Nested Schema for `timeouts`
+
+Optional:
+
+- `create` (String) sets timeout for cluster creation - default 30 minutes
+
+## Attributes Reference
 
 - `cpu_cores` (Number) Instance's CPU cores
 - `created_at` (String) Timestamp when the instance was created
@@ -86,18 +167,13 @@ resource "civo_instance" "foo" {
 - `source_type` (String) Instance's source type
 - `status` (String) Instance's status
 
-<a id="nestedblock--timeouts"></a>
-### Nested Schema for `timeouts`
-
-Optional:
 
-- `create` (String)
 
 ## Import
 
 Import is supported using the following syntax:
 
 ```shell
 # using ID
-terraform import civo_instance.myintance 18bd98ad-1b6e-4f87-b48f-e690b4fd7413
+terraform import civo_instance.example 18bd98ad-1b6e-4f87-b48f-e690b4fd7413
 ```