fix: discovery of hidden directories (#4945)

* chore: add test to track that hidden directories are included in queue dir

* docs: updated queue-include documentation to include hidden directories

* Lint issues

* Discovery of hidden dirs

* PR cleanup

Author: denis256

internal/runner/runnerpool/builder.go

@@ -28,6 +28,7 @@ func Build(
 	d := discovery.
 		NewDiscovery(workingDir).
 		WithOptions(opts...).
+		WithHidden().
 		WithDiscoverExternalDependencies().
 		WithParseInclude().
 		WithParseExclude().

test/fixtures/hidden-runall/.cloud/terraform/app1/main.tf

@@ -0,0 +1,4 @@
+output "text" {
+  value = "hidden1"
+}
+

test/fixtures/hidden-runall/.cloud/terraform/app1/terragrunt.hcl

@@ -0,0 +1 @@
+

test/fixtures/hidden-runall/.cloud/terraform/app2/main.tf

@@ -0,0 +1,4 @@
+output "text" {
+  value = "hidden2"
+}
+

test/fixtures/hidden-runall/.cloud/terraform/app2/terragrunt.hcl

@@ -0,0 +1 @@
+

test/integration_test.go

@@ -115,6 +115,7 @@ const (
 	testFixtureTraceParent                    = "fixtures/trace-parent"
 	testFixtureVersionInvocation              = "fixtures/version-invocation"
 	testFixtureVersionFilesCacheKey           = "fixtures/version-files-cache-key"
+	hiddenRunAllFixturePath                   = "fixtures/hidden-runall"
 
 	terraformFolder = ".terraform"
 
@@ -4394,3 +4395,18 @@ output "result" {
 		`There is no variable named "dependency".`,
 	)
 }
+
+func TestRunAllDetectsHiddenDirectories(t *testing.T) {
+	t.Parallel()
+	rootPath := helpers.CopyEnvironment(t, hiddenRunAllFixturePath, ".cloud/**")
+	modulePath := util.JoinPath(rootPath, hiddenRunAllFixturePath)
+	helpers.CleanupTerraformFolder(t, modulePath)
+
+	// Expect Terragrunt to discover modules under .cloud directory
+	command := "terragrunt run --all plan --non-interactive --log-level trace --working-dir " + modulePath
+	stdout, _, err := helpers.RunTerragruntCommandWithOutput(t, command)
+
+	require.NoError(t, err)
+	assert.Contains(t, stdout, "hidden1")
+	assert.Contains(t, stdout, "hidden2")
+}