Option to see dangling images in the explorer

package.json

@@ -58,6 +58,7 @@
         "onCommand:vscode-docker.images.build",
         "onCommand:vscode-docker.images.configureExplorer",
         "onCommand:vscode-docker.images.inspect",
+        "onCommand:vscode-docker.images.showDangling",
         "onCommand:vscode-docker.images.prune",
         "onCommand:vscode-docker.images.pull",
         "onCommand:vscode-docker.images.push",
@@ -290,6 +291,11 @@
                     "when": "view == dockerImages && !vscode-docker:newSdkContext",
                     "group": "navigation@2"
                 },
+                {
+                    "command": "vscode-docker.images.showDangling",
+                    "when": "view == dockerImages && !vscode-docker:newSdkContext",
+                    "group": "navigation@2"
+                },
                 {
                     "command": "vscode-docker.images.configureExplorer",
                     "when": "view == dockerImages",
@@ -2354,6 +2360,12 @@
                 "category": "%vscode-docker.commands.category.dockerImages%",
                 "icon": "$(clear-all)"
             },
+            {
+                "command": "vscode-docker.images.showDangling",
+                "title": "%vscode-docker.commands.images.showDangling%",
+                "category": "%vscode-docker.commands.category.dockerImages%",
+                "icon": "$(outline-view-icon)"
+            },
             {
                 "command": "vscode-docker.images.pull",
                 "title": "%vscode-docker.commands.images.pull%",

package.nls.json

@@ -218,6 +218,7 @@
     "vscode-docker.commands.images.build": "Build Image...",
     "vscode-docker.commands.images.configureExplorer": "Configure Explorer...",
     "vscode-docker.commands.images.inspect": "Inspect",
+    "vscode-docker.commands.images.showDangling": "Show dangling images",
     "vscode-docker.commands.images.prune": "Prune...",
     "vscode-docker.commands.images.pull": "Pull",
     "vscode-docker.commands.images.push": "Push...",

src/commands/images/showDanglingImages.ts

@@ -0,0 +1,8 @@
+
+import { ext } from "../../extensionVariables";
+import { IActionContext } from 'vscode-azureextensionui';
+
+export async function showDanglingImages(context: IActionContext): Promise<void> {
+    const conf: boolean = await ext.context.globalState.get('vscode-docker.images.showDanglingImages', false);
+    await ext.context.globalState.update('vscode-docker.images.showDanglingImages', !conf);
+}

src/commands/registerCommands.ts

@@ -34,6 +34,7 @@ import { buildImage } from "./images/buildImage";
 import { configureImagesExplorer } from "./images/configureImagesExplorer";
 import { copyFullTag } from "./images/copyFullTag";
 import { inspectImage } from "./images/inspectImage";
+import { showDanglingImages } from "./images/showDanglingImages";
 import { pruneImages } from "./images/pruneImages";
 import { pullImage } from "./images/pullImage";
 import { pushImage } from "./images/pushImage";
@@ -142,6 +143,7 @@ export function registerCommands(): void {
     registerCommand('vscode-docker.images.configureExplorer', configureImagesExplorer);
     registerCommand('vscode-docker.images.inspect', inspectImage);
     registerCommand('vscode-docker.images.prune', pruneImages);
+    registerCommand('vscode-docker.images.showDangling', showDanglingImages);
     registerWorkspaceCommand('vscode-docker.images.pull', pullImage);
     registerWorkspaceCommand('vscode-docker.images.push', pushImage);
     registerCommand('vscode-docker.images.remove', removeImage);

src/docker/DockerApiClient.ts

@@ -34,7 +34,7 @@ export interface DockerApiClient extends Disposable {
     stopContainer(context: IActionContext, ref: string, token?: CancellationToken): Promise<void>;
     removeContainer(context: IActionContext, ref: string, token?: CancellationToken): Promise<void>;
 
-    getImages(context: IActionContext, token?: CancellationToken): Promise<DockerImage[]>;
+    getImages(context: IActionContext, includeDangling: boolean, token?: CancellationToken): Promise<DockerImage[]>;
     inspectImage(context: IActionContext, ref: string, token?: CancellationToken): Promise<DockerImageInspection>;
     pruneImages(context: IActionContext, token?: CancellationToken): Promise<PruneResult | undefined>;
     tagImage(context: IActionContext, ref: string, tag: string, token?: CancellationToken): Promise<void>;

src/docker/DockerServeClient/DockerServeClient.ts

@@ -139,7 +139,7 @@ export class DockerServeClient extends ContextChangeCancelClient implements Dock
     }
 
     // #region Not supported by the Docker SDK yet
-    public async getImages(context: IActionContext, token?: CancellationToken): Promise<DockerImage[]> {
+    public async getImages(context: IActionContext, includeDangling?: boolean, token?: CancellationToken): Promise<DockerImage[]> {
         throw new NotSupportedError(context);
     }
 

src/docker/DockerodeApiClient/DockerodeApiClient.ts

@@ -254,8 +254,12 @@ export class DockerodeApiClient extends ContextChangeCancelClient implements Doc
         return this.callWithErrorHandling(context, async () => container.remove({ force: true }), token);
     }
 
-    public async getImages(context: IActionContext, token?: CancellationToken): Promise<DockerImage[]> {
-        const images = await this.callWithErrorHandling(context, async () => this.dockerodeClient.listImages({ filters: { "dangling": ["false"] } }), token);
+    public async getImages(context: IActionContext, includeDangling: boolean = false, token?: CancellationToken): Promise<DockerImage[]> {
+        const filters = {};
+        if (!includeDangling) {
+            filters['dangling'] = ["false"];
+        }
+        const images = await this.callWithErrorHandling(context, async () => this.dockerodeClient.listImages({ filters: filters }), token);
         const result: DockerImage[] = [];
 
         for (const image of images) {

src/tree/images/ImageTreeItem.ts

@@ -67,10 +67,11 @@ export class ImageTreeItem extends AzExtTreeItemIntermediate {
     public async deleteTreeItemImpl(context: IActionContext): Promise<void> {
         let ref = this.fullTag;
 
-        // Dangling images are not shown in the explorer. However, an image can end up with <none> tag, if a new version of that particular tag is pulled.
-        if (ref.endsWith(':<none>') && this._item.RepoDigests?.length) {
-            // Image is tagged <none>. Need to delete by digest.
-            ref = this._item.RepoDigests[0];
+        // Dangling images are shown in the explorer, depending on the setting.
+        // In this case, an image end up with <none> tag need to be deleted using the Id.
+        if (ref.endsWith('<none>')) {
+            // Image is tagged <none>. Need to delete by ID.
+            ref = this._item.Id;
         }
 
         return ext.dockerClient.removeImage(context, ref);

src/tree/images/ImagesTreeItem.ts

@@ -58,7 +58,8 @@ export class ImagesTreeItem extends LocalRootTreeItemBase<DatedDockerImage, Imag
     }
 
     public async getItems(context: IActionContext): Promise<DatedDockerImage[]> {
-        const result = await ext.dockerClient.getImages(context);
+        const includeDangling = ext.context.globalState.get('vscode-docker.images.showDanglingImages', false);
+        const result = await ext.dockerClient.getImages(context, includeDangling);
         this.outdatedImageChecker.markOutdatedImages(result);
         return result;
     }