suppress duplication error in linter, fix example code

Signed-off-by: Pavel Boldyrev <627562+bpg@users.noreply.github.com>

example/data_source_virtual_environment_containers.tf

@@ -1,6 +1,6 @@
 data "proxmox_virtual_environment_containers" "example" {
   depends_on = [proxmox_virtual_environment_container.example]
-  tags       = ["ubuntu"]
+  tags       = ["example"]
 
   lifecycle {
     postcondition {
@@ -12,7 +12,7 @@ data "proxmox_virtual_environment_containers" "example" {
 
 data "proxmox_virtual_environment_containers" "template_example" {
   depends_on = [proxmox_virtual_environment_container.example]
-  tags       = ["ubuntu"]
+  tags       = ["example"]
 
   filter {
     name   = "template"
@@ -23,12 +23,6 @@ data "proxmox_virtual_environment_containers" "template_example" {
     name   = "status"
     values = ["running"]
   }
-
-  filter {
-    name   = "name"
-    regex  = true
-    values = [".*ubuntu.*"]
-  }
 }
 
 output "proxmox_virtual_environment_containers_example" {

example/resource_virtual_environment_container.tf

@@ -73,6 +73,11 @@ resource "proxmox_virtual_environment_container" "example" {
     vm_id = proxmox_virtual_environment_container.example_template.id
   }
 
+  tags = [
+    "container",
+  ]
+
+
   initialization {
     hostname = "terraform-provider-proxmox-example-lxc"
   }

proxmoxtf/datasource/containers.go

@@ -30,6 +30,8 @@ const (
 )
 
 // Containers returns a resource for the Proxmox Containers.
+//
+//nolint:dupl // TODO: refactor to avoid duplication
 func Containers() *schema.Resource {
 	return &schema.Resource{
 		Schema: map[string]*schema.Schema{
@@ -198,6 +200,7 @@ func containersRead(ctx context.Context, d *schema.ResourceData, m interface{})
 	return diags
 }
 
+//nolint:dupl // TODO: refactor to avoid duplication
 func checkContainerMatchFilters(container map[string]interface{}, filters []interface{}) (bool, error) {
 	for _, v := range filters {
 		filter := v.(map[string]interface{})

proxmoxtf/datasource/vms.go

@@ -35,6 +35,8 @@ const (
 )
 
 // VMs returns a resource for the Proxmox VMs.
+//
+//nolint:dupl // TODO: refactor to avoid duplication
 func VMs() *schema.Resource {
 	return &schema.Resource{
 		Schema: map[string]*schema.Schema{
@@ -225,6 +227,7 @@ func getNodeNames(ctx context.Context, d *schema.ResourceData, api proxmox.Clien
 	return nodeNames, nil
 }
 
+//nolint:dupl // TODO: refactor to avoid duplication
 func checkVMMatchFilters(vm map[string]interface{}, filters []interface{}) (bool, error) {
 	for _, v := range filters {
 		filter := v.(map[string]interface{})