api: Deprecate `Container` and `ContainerConfig` for `/images/{id}/json`

These fields were an implementation detail of the classic image builder
and are empty when using buildkit.

Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>

api/server/router/image/image_routes.go

@@ -338,8 +338,8 @@ func (ir *imageRouter) toImageInspect(img *image.Image) (*types.ImageInspect, er
 		Parent:          img.Parent.String(),
 		Comment:         comment,
 		Created:         created,
-		Container:       img.Container,
-		ContainerConfig: &img.ContainerConfig,
+		Container:       img.Container,        //nolint:staticcheck // ignore SA1019: field is deprecated, but still set on API < v1.45.
+		ContainerConfig: &img.ContainerConfig, //nolint:staticcheck // ignore SA1019: field is deprecated, but still set on API < v1.45.
 		DockerVersion:   img.DockerVersion,
 		Author:          img.Author,
 		Config:          img.Config,

api/swagger.yaml

@@ -1744,10 +1744,15 @@ definitions:
           The ID of the container that was used to create the image.
 
           Depending on how the image was created, this field may be empty.
+
+          **Deprecated**: this field is kept for backward compatibility, but
+          will be removed in API v1.45.
         type: "string"
-        x-nullable: false
         example: "65974bc86f1770ae4bff79f651ebdbce166ae9aada632ee3fa9af3a264911735"
       ContainerConfig:
+        description: |
+          **Deprecated**: this field is kept for backward compatibility, but
+          will be removed in API v1.45.
         $ref: "#/definitions/ContainerConfig"
       DockerVersion:
         description: |

api/types/types.go

@@ -77,6 +77,8 @@ type ImageInspect struct {
 	// Container is the ID of the container that was used to create the image.
 	//
 	// Depending on how the image was created, this field may be empty.
+	//
+	// Deprecated: this field is omitted in API v1.45, but kept for backward compatibility.
 	Container string
 
 	// ContainerConfig is an optional field containing the configuration of the
@@ -84,6 +86,8 @@ type ImageInspect struct {
 	//
 	// Previous versions of Docker builder used this field to store build cache,
 	// and it is not in active use anymore.
+	//
+	// Deprecated: this field is omitted in API v1.45, but kept for backward compatibility.
 	ContainerConfig *container.Config
 
 	// DockerVersion is the version of Docker that was used to build the image.

docs/api/version-history.md

@@ -65,6 +65,8 @@ keywords: "API, Docker, rcli, REST, documentation"
   The container-wide `MacAddress` field in `Config`, on `POST /containers/create`, is now deprecated.
 * The field `Networks` in the `POST /services/create` and `POST /services/{id}/update`
   requests is now deprecated. You should instead use the field `TaskTemplate.Networks`.
+* The `Container` and `ContainerConfig` fields in the `GET /images/{name}/json`
+  response are deprecated and will no longer be included in API v1.45.
 
 ## v1.43 API changes