docs: Move attach custom volume example to lxd_volume

docs/resources/instance.md

@@ -21,35 +21,6 @@ resource "lxd_instance" "instance1" {
 }
 ```
 
-## Example to Attach a Volume
-
-```hcl
-resource "lxd_storage_pool" "pool1" {
-  name   = "mypool"
-  driver = "zfs"
-}
-
-resource "lxd_volume" "volume1" {
-  name = "myvolume"
-  pool = lxd_storage_pool.pool1.name
-}
-
-resource "lxd_instance" "instance1" {
-  name  = "%s"
-  image = "ubuntu"
-
-  device {
-    name = "volume1"
-    type = "disk"
-    properties = {
-      path   = "/mount/point/in/instance"
-      source = lxd_volume.volume1.name
-      pool   = lxd_storage_pool.pool1.name
-    }
-  }
-}
-```
-
 ## Example to proxy/forward ports
 
 ```hcl

docs/resources/volume.md

@@ -4,15 +4,52 @@ Manages an LXD volume.
 
 ## Example Usage
 
+Example of how to create a custom storage pool volume:
 ```hcl
-resource "lxd_storage_pool" "pool1" {
+resource "lxd_storage_pool" "pool" {
   name   = "mypool"
   driver = "zfs"
 }
 
-resource "lxd_volume" "volume1" {
+resource "lxd_volume" "volume" {
   name = "myvolume"
-  pool = lxd_storage_pool.pool1.name
+  pool = lxd_storage_pool.pool.name
+}
+```
+
+Example of how to create and attach a custom storage pool volume to an instance:
+```hcl
+# Create storage pool.
+resource "lxd_storage_pool" "pool" {
+  name   = "mypool"
+  driver = "zfs"
+}
+
+# Create custom volume.
+resource "lxd_volume" "volume" {
+  name = "myvol"
+  pool = lxd_storage_pool.pool.name
+
+  config = {
+    size = "5GiB"
+  }
+}
+
+# Create an instance with attached custom volume.
+resource "lxd_instance" "instance" {
+  name    = "myinstance"
+  image   = "ubuntu:22.04"
+
+  # Attach additional volume.
+  device {
+    name = "vol-01"
+    type = "disk"
+    properties = {
+      path   = "/var/lib/docker"           # Path where volume is mounted within an instance.
+      pool   = lxd_storage_pool.pool.name  # Storage pool name where volume is created.
+      source = lxd_volume.volume.name      # Volume name.
+    }
+  }
 }
 ```