bake: allow dot in target name

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>
(cherry picked from commit 8f61bfbbaa548eecce2f0b32c1e2ce37b8e87a0c)

bake/bake.go

@@ -28,7 +28,7 @@ var (
 	httpPrefix                   = regexp.MustCompile(`^https?://`)
 	gitURLPathWithFragmentSuffix = regexp.MustCompile(`\.git(?:#.+)?$`)
 
-	validTargetNameChars = `[a-zA-Z0-9_-]+`
+	validTargetNameChars = `[a-zA-Z0-9._-]+`
 	targetNamePattern    = regexp.MustCompile(`^` + validTargetNameChars + `$`)
 )
 

bake/bake_test.go

@@ -1011,7 +1011,7 @@ func TestTargetName(t *testing.T) {
 		},
 		{
 			target:  "a.b",
-			wantErr: true,
+			wantErr: false,
 		},
 		{
 			target:  "_a",

bake/compose_test.go

@@ -330,7 +330,7 @@ func TestServiceName(t *testing.T) {
 		},
 		{
 			svc:     "a.b",
-			wantErr: true,
+			wantErr: false,
 		},
 		{
 			svc:     "_a",