[compat api] Remove ContainerConfig field

pkg/api/handlers/compat/images.go

@@ -390,31 +390,34 @@ func imageDataToImageInspect(ctx context.Context, l *libimage.Image, r *http.Req
 	cc.Volumes = info.Config.Volumes
 
 	dockerImageInspect := dockerImage.InspectResponse{
-		Architecture:    info.Architecture,
-		Author:          info.Author,
-		Comment:         info.Comment,
-		Config:          &config,
-		ContainerConfig: cc,
-		Created:         l.Created().Format(time.RFC3339Nano),
-		DockerVersion:   info.Version,
-		GraphDriver:     graphDriver,
-		ID:              "sha256:" + l.ID(),
-		Metadata:        dockerImage.Metadata{},
-		Os:              info.Os,
-		OsVersion:       info.Version,
-		Parent:          info.Parent,
-		RepoDigests:     info.RepoDigests,
-		RepoTags:        info.RepoTags,
-		RootFS:          rootfs,
-		Size:            info.Size,
-		Variant:         "",
+		Architecture:  info.Architecture,
+		Author:        info.Author,
+		Comment:       info.Comment,
+		Config:        &config,
+		Created:       l.Created().Format(time.RFC3339Nano),
+		DockerVersion: info.Version,
+		GraphDriver:   graphDriver,
+		ID:            "sha256:" + l.ID(),
+		Metadata:      dockerImage.Metadata{},
+		Os:            info.Os,
+		OsVersion:     info.Version,
+		Parent:        info.Parent,
+		RepoDigests:   info.RepoDigests,
+		RepoTags:      info.RepoTags,
+		RootFS:        rootfs,
+		Size:          info.Size,
+		Variant:       "",
 	}
 
 	if _, err := apiutil.SupportedVersion(r, "<1.44.0"); err == nil {
 		//nolint:staticcheck // Deprecated field
 		dockerImageInspect.VirtualSize = info.VirtualSize
 	}
 
+	if _, err := apiutil.SupportedVersion(r, "<1.45.0"); err == nil {
+		dockerImageInspect.ContainerConfig = cc //nolint:staticcheck // Deprecated field
+	}
+
 	return &handlers.ImageInspect{InspectResponse: dockerImageInspect}, nil
 }
 

pkg/api/handlers/types.go

@@ -20,8 +20,13 @@ type AuthConfig struct {
 
 type ImageInspect struct {
 	dockerImage.InspectResponse
-	// Container is for backwards compat but is basically unused
-	Container string
+	// When you embed a struct, the fields of the embedded struct are "promoted" to the outer struct.
+	// If a field in the outer struct has the same name as a field in the embedded struct,
+	// the outer struct's field will shadow or override the embedded one allowing for a clean way to
+	// hide fields from the swagger spec that still exist in the libraries struct.
+	Container       string `json:"-"`
+	ContainerConfig string `json:"-"`
+	VirtualSize     string `json:"-"`
 }
 
 type ContainerConfig struct {

test/apiv2/10-images.at

@@ -66,6 +66,14 @@ t GET /v1.43/images/$iid/json 200 \
 t GET /v1.44/images/$iid/json 200 \
   .VirtualSize=null
 
+# Test ContainerConfig fields are present in API v1.44 (backward compatibility)
+t GET /v1.44/images/$iid/json 200 \
+  .ContainerConfig.Hostname~[0-9a-f]
+
+# Test ContainerConfig fields are no longer present in API >= v1.45 (deprecated since API v1.44, omitted since API v1.45)
+t GET /v1.45/images/$iid/json 200 \
+  .ContainerConfig=null
+
 t POST "images/create?fromImage=alpine" 200 .error~null .status~".*Download complete.*"
 t POST "libpod/images/pull?reference=alpine&compatMode=true" 200 .error~null .status~".*Download complete.*"
 

test/apiv2/python/rest_api/test_v2_0_0_image.py

@@ -23,7 +23,6 @@ def test_list(self):
             "SharedSize",
             "VirtualSize",
             "Labels",
-            "Containers",
         )
         images = r.json()
         self.assertIsInstance(images, list)
@@ -45,7 +44,6 @@ def test_inspect(self):
             "Parent",
             "Comment",
             "Created",
-            "Container",
             "DockerVersion",
             "Author",
             "Architecture",