fix: prevent false diffs in stack file mode and stabilize docker network read

Author: grulicht

README.md

@@ -365,7 +365,7 @@ See the [LICENSE](https://github.com/portainer/terraform-provider-portainer/blob
 
 
 ## Acknowledgements
-- [HashiCorp Terraform](https://www.hashicorp.com/products/terraform)
+- HashiCorp Terraform
 - [Portainer](https://portainer.io)
 - [OpenTofu](https://opentofu.org/)
 - [Docker](https://www.docker.com/)

docs/index.md

@@ -231,7 +231,7 @@ This module is 100% Open Source and is distributed under the MIT License.
 See the [LICENSE](https://github.com/portainer/terraform-provider-portainer/blob/main/LICENSE) file for more information.
 
 ## 🌐 Acknowledgements
-- [HashiCorp Terraform](https://www.hashicorp.com/products/terraform)
+- HashiCorp Terraform
 - [Portainer](https://portainer.io)
 - [OpenTofu](https://opentofu.org/)
 - [Docker](https://www.docker.com/)

internal/resource_docker_network.go

@@ -258,8 +258,18 @@ func resourceDockerNetworkRead(d *schema.ResourceData, meta interface{}) error {
 		_ = d.Set("internal", result.Internal)
 		_ = d.Set("attachable", result.Attachable)
 		_ = d.Set("ingress", result.Ingress)
-		_ = d.Set("enable_ipv4", result.EnableIPv4)
-		_ = d.Set("enable_ipv6", result.EnableIPv6)
+		enableIPv4 := result.EnableIPv4
+		enableIPv6 := result.EnableIPv6
+		if !enableIPv4 && !enableIPv6 {
+			if d.Get("enable_ipv4").(bool) {
+				enableIPv4 = true
+			}
+			if d.Get("enable_ipv6").(bool) {
+				enableIPv6 = true
+			}
+		}
+		_ = d.Set("enable_ipv4", enableIPv4)
+		_ = d.Set("enable_ipv6", enableIPv6)
 	} else {
 		_ = d.Set("internal", d.Get("internal").(bool))
 		_ = d.Set("attachable", d.Get("attachable").(bool))

internal/resource_stack.go

@@ -64,12 +64,30 @@ func resourcePortainerStack() *schema.Resource {
 				Description: "Creation method: 'string', 'file', 'repository', or 'url'",
 				ForceNew:    true,
 			},
-			"name":               {Type: schema.TypeString, Required: true, ForceNew: true},
-			"endpoint_id":        {Type: schema.TypeInt, Required: true, ForceNew: true},
-			"swarm_id":           {Type: schema.TypeString, Optional: true, ForceNew: true, Computed: true},
-			"namespace":          {Type: schema.TypeString, Optional: true, ForceNew: true},
-			"stack_file_content": {Type: schema.TypeString, Optional: true},
-			"stack_file_path":    {Type: schema.TypeString, Optional: true},
+			"name":        {Type: schema.TypeString, Required: true, ForceNew: true},
+			"endpoint_id": {Type: schema.TypeInt, Required: true, ForceNew: true},
+			"swarm_id":    {Type: schema.TypeString, Optional: true, ForceNew: true, Computed: true},
+			"namespace":   {Type: schema.TypeString, Optional: true, ForceNew: true},
+			"stack_file_content": {
+				Type:     schema.TypeString,
+				Optional: true,
+				DiffSuppressFunc: func(k, old, new string, d *schema.ResourceData) bool {
+					if d.Get("method").(string) != "file" {
+						return false
+					}
+					path, ok := d.GetOk("stack_file_path")
+					if !ok {
+						return false
+					}
+					content, err := os.ReadFile(path.(string))
+					if err != nil {
+						return false
+					}
+					current := string(content)
+					return strings.TrimSpace(old) == strings.TrimSpace(current)
+				},
+			},
+			"stack_file_path": {Type: schema.TypeString, Optional: true},
 			"additional_files": {
 				Type:        schema.TypeList,
 				Optional:    true,