问题 Visual Studio代码：找不到preLaunchTask'build'？

我使用以下命令创建了一个新的.NET Core应用程序：

dotnet new console -o test

当我尝试在Visual Studio代码调试器中运行它时，我得到：

Could not find the preLaunchTask 'build'?

Visual Studio Code为我生成了这些文件：

tasks.json:
{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "0.1.0",
    "command": "dotnet",
    "isShellCommand": true,
    "args": [],
    "tasks": [
        {
            "taskName": "build",
            "args": [ ],
            "isBuildCommand": true,
            "showOutput": "silent",
            "problemMatcher": "$msCompile"
        }
    ]
}

和

launch.json
{
    "version": "0.2.0",
    "configurations": [
        {
            "name": ".NET Core Launch (console)",
            "type": "coreclr",
            "request": "launch",
            "preLaunchTask": "build",
            "program": "${workspaceRoot}/bin/Debug/<target-framework>/<project-name.dll>",
            "args": [],
            "cwd": "${workspaceRoot}",
            "stopAtEntry": false,
            "console": "internalConsole"
        },
        {
            "name": ".NET Core Launch (web)",
            "type": "coreclr",
            "request": "launch",
            "preLaunchTask": "build",
            "program": "${workspaceRoot}/bin/Debug/<target-framework>/<project-name.dll>",
            "args": [],
            "cwd": "${workspaceRoot}",
            "stopAtEntry": false,
            "launchBrowser": {
                "enabled": true,
                "args": "${auto-detect-url}",
                "windows": {
                    "command": "cmd.exe",
                    "args": "/C start ${auto-detect-url}"
                },
                "osx": {
                    "command": "open"
                },
                "linux": {
                    "command": "xdg-open"
                }
            },
            "env": {
                "ASPNETCORE_ENVIRONMENT": "Development"
            },
            "sourceFileMap": {
                "/Views": "${workspaceRoot}/Views"
            }
        },
        {
            "name": ".NET Core Attach",
            "type": "coreclr",
            "request": "attach",
            "processId": "${command:pickProcess}"
        }
    ]
}

我的问题看起来很像 这个，但在我的情况下，在launchLaunchTask的launch.json和tasks.json中的名称之间没有不匹配，所以在这种情况下答案不适用。我正在运行Visual Studio Code版本1.11.2和.NET Core 1.1（创建此帖子时的最新版本）。

我在Windows机器和Mac上都尝试过同样的问题。如果我执行命令“dotnet restore”和“dotnet run”，代码运行没有问题，但我仍然得到相同的错误：“找不到preLaunchTask'构建'”