feat: extend container executor for Node SSR

internal/backendexecutor/executor.go

@@ -98,6 +98,8 @@ type Request struct {
 	RestartPolicy containerengine.RestartPolicy
 	// HealthEndpoint 后端 Actuator 健康检查的 HTTP 端点。
 	HealthEndpoint string
+	// HealthPath 健康检查路径；为空时使用 backend 默认路径。
+	HealthPath string
 	// StartLog 表示是否读取并回传容器启动日志。
 	StartLog bool
 	// LogReporter 用于回传容器启动日志的每一行。
@@ -347,30 +349,40 @@ func validateRequest(request Request) error {
 	if request.ContainerName == "" || strings.TrimSpace(request.ContainerName) != request.ContainerName {
 		return errors.New("exact container name is required")
 	}
-	if request.Port != 8080 && request.Port != 8081 {
+	if request.Port != 8080 && request.Port != 8081 && request.Port != 18910 && request.Port != 28910 {
-		return fmt.Errorf("backend container port must be 8080 or 8081: %d", request.Port)
+		return fmt.Errorf("container port must be 8080, 8081, 18910, or 28910: %d", request.Port)
 	}
 	if request.PortEnvironmentKey == "" || strings.Contains(request.PortEnvironmentKey, "=") || strings.TrimSpace(request.PortEnvironmentKey) != request.PortEnvironmentKey {
 		return errors.New("exact port environment key is required")
 	}
+	if request.ConfigSource != "" || request.ConfigTarget != "" {
 		if !filepath.IsAbs(request.ConfigSource) || !filepath.IsAbs(request.ConfigTarget) {
 			return errors.New("backend configuration source and target must be absolute paths")
 		}
+	}
+	if request.TmpSource != "" || request.TmpTarget != "" {
 		if !filepath.IsAbs(request.TmpSource) || !filepath.IsAbs(request.TmpTarget) {
 			return errors.New("backend temporary source and target must be absolute paths")
 		}
+	}
+	if request.ConfigSource != "" {
 		if request.ConfigEnvironmentKey == "" || strings.Contains(request.ConfigEnvironmentKey, "=") || strings.TrimSpace(request.ConfigEnvironmentKey) != request.ConfigEnvironmentKey {
 			return errors.New("exact backend configuration environment key is required")
 		}
 		if request.ConfigLocation == "" || strings.TrimSpace(request.ConfigLocation) != request.ConfigLocation {
 			return errors.New("exact backend configuration location is required")
 		}
+	}
 	if err := validateRestartPolicy(request.RestartPolicy); err != nil {
 		return err
 	}
+	path := request.HealthPath
+	if path == "" {
+		path = healthPath
+	}
 	parsed, err := url.ParseRequestURI(request.HealthEndpoint)
-	if err != nil || parsed.Scheme != "http" || parsed.Host == "" || parsed.Path != healthPath {
+	if err != nil || parsed.Scheme != "http" || parsed.Host == "" || parsed.Path != path {
-		return fmt.Errorf("health endpoint must be an HTTP URL with exact path %s", healthPath)
+		return fmt.Errorf("health endpoint must be an HTTP URL with exact path %s", path)
 	}
 	if parsed.Port() != strconv.Itoa(request.Port) {
 		return fmt.Errorf("health endpoint port must equal backend container port %d", request.Port)
@@ -427,23 +439,25 @@ func containerSpec(request Request) containerengine.ContainerSpec {
 	if request.DisplayImageReference != "" {
 		imageReference = request.DisplayImageReference
 	}
-	return containerengine.ContainerSpec{
+	spec := containerengine.ContainerSpec{
 		Name:               request.ContainerName,
 		ImageReference:     imageReference,
 		Platform:           request.Platform,
-		Environment: []string{
+		Environment:        []string{request.PortEnvironmentKey + "=" + strconv.Itoa(request.Port)},
-			request.PortEnvironmentKey + "=" + strconv.Itoa(request.Port),
-			request.ConfigEnvironmentKey + "=" + request.ConfigLocation,
-		},
 		NetworkMode:        hostNetworkMode,
 		RestartPolicy:      request.RestartPolicy,
-		Mounts: []containerengine.Mount{
+		Mounts:             nil,
-			{Type: bindMountType, Source: request.ConfigSource, Target: request.ConfigTarget, ReadOnly: true},
-			{Type: bindMountType, Source: request.TmpSource, Target: request.TmpTarget},
-		},
 		User:               "0:0",
 		StopTimeoutSeconds: containerStopTimeoutSeconds,
 	}
+	if request.ConfigSource != "" {
+		spec.Environment = append(spec.Environment, request.ConfigEnvironmentKey+"="+request.ConfigLocation)
+		spec.Mounts = append(spec.Mounts, containerengine.Mount{Type: bindMountType, Source: request.ConfigSource, Target: request.ConfigTarget, ReadOnly: true})
+	}
+	if request.TmpSource != "" {
+		spec.Mounts = append(spec.Mounts, containerengine.Mount{Type: bindMountType, Source: request.TmpSource, Target: request.TmpTarget})
+	}
+	return spec
 }
 
 // pullIntent 构造拉取并校验后端镜像步骤的持久化意图。