support inline yaml for docker labels, serveral minor fixes

internal/route/provider/docker_labels_test.go

@@ -0,0 +1,36 @@
+package provider
+
+import (
+	"testing"
+
+	"github.com/docker/docker/api/types"
+	"github.com/yusing/go-proxy/internal/docker"
+	. "github.com/yusing/go-proxy/internal/utils/testing"
+	"gopkg.in/yaml.v3"
+
+	_ "embed"
+)
+
+//go:embed docker_labels.yaml
+var testDockerLabelsYAML []byte
+
+func TestParseDockerLabels(t *testing.T) {
+	var provider DockerProvider
+
+	labels := make(map[string]string)
+	ExpectNoError(t, yaml.Unmarshal(testDockerLabelsYAML, &labels))
+
+	routes, err := provider.entriesFromContainerLabels(
+		docker.FromDocker(&types.Container{
+			Names:  []string{"container"},
+			Labels: labels,
+			State:  "running",
+			Ports: []types.Port{
+				{Type: "tcp", PrivatePort: 1234, PublicPort: 1234},
+			},
+		}, "/var/run/docker.sock"),
+	)
+	ExpectNoError(t, err)
+	ExpectTrue(t, routes.Has("app"))
+	ExpectTrue(t, routes.Has("app1"))
+}