bake: fix print output

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

bake/bake.go

@@ -67,29 +67,53 @@ func ReadLocalFiles(names []string) ([]File, error) {
 	return out, nil
 }
 
-func ReadTargets(ctx context.Context, files []File, targets, overrides []string, defaults map[string]string) (map[string]*Target, []*Group, error) {
+func ReadTargets(ctx context.Context, files []File, inp *Input, targets []string, overrides []string, defaults map[string]string) (map[string]*Target, map[string]*Group, map[string]build.Options, error) {
 	c, err := ParseFiles(files, defaults)
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, nil, err
 	}
 
 	o, err := c.newOverrides(overrides)
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, nil, err
 	}
 	m := map[string]*Target{}
 	for _, n := range targets {
 		for _, n := range c.ResolveGroup(n) {
 			t, err := c.ResolveTarget(n, o)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, nil, err
 			}
 			if t != nil {
 				m[n] = t
 			}
 		}
 	}
-	return m, c.Groups, nil
+
+	bo, err := targetsToBuildOpt(m, inp)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+
+	g := map[string]*Group{
+		"default": {
+			Targets: targets,
+		},
+	}
+	if len(targets) == 0 || (len(targets) == 1 && targets[0] == "default") {
+		for _, group := range c.Groups {
+			if group.Name != "default" {
+				continue
+			}
+			g = map[string]*Group{
+				"default": {
+					Targets: group.Targets,
+				},
+			}
+		}
+	}
+
+	return m, g, bo, nil
 }
 
 func ParseFiles(files []File, defaults map[string]string) (_ *Config, err error) {
@@ -557,7 +581,7 @@ func (t *Target) AddOverrides(overrides map[string]Override) error {
 	return nil
 }
 
-func TargetsToBuildOpt(m map[string]*Target, inp *Input) (map[string]build.Options, error) {
+func targetsToBuildOpt(m map[string]*Target, inp *Input) (map[string]build.Options, error) {
 	m2 := make(map[string]build.Options, len(m))
 	for k, v := range m {
 		bo, err := toBuildOpt(v, inp)