我一直在尝试将我的应用程序部署到GithubPages，但每次构建后我都必须不断创建404.html，这变得非常乏味。但是我对使用CLI还是陌生的，需要一些帮助。

第一行有效，它生成运行Web应用程序所需的html代码。但是第二行给我带来了问题，文件夹结构从未改变。我需要做的就是将文件复制到同一目录并重命名。我正在使用Angular，而我正在尝试的命令是npm run copy-index"此文件存在。运行Test-Path ./docs/index.html也会返回true。所以我假设我的语法错误

    "build-ghp": "ng build --prod --base-href  https://grimzero.github.io/Portfolio/","copy-index": "Copy-Item -Path ./docs/index.html -Destination ./docs/404.html"

调试记录器吐出以下错误日志：

0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',1 verbose cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',1 verbose cli   'run',1 verbose cli   'copy-index' ]
2 info using npm@6.9.0
3 info using node@v10.16.0
4 verbose run-script [ 'precopy-index','copy-index','postcopy-index' ]
5 info lifecycle portfolio@0.0.0~precopy-index: portfolio@0.0.0
6 info lifecycle portfolio@0.0.0~copy-index: portfolio@0.0.0
7 verbose lifecycle portfolio@0.0.0~copy-index: unsafe-perm in lifecycle true
8 verbose lifecycle portfolio@0.0.0~copy-index: PATH: C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin;C:\Users\tassc\Projects\Portfolio\node_modules\.bin;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Program Files\nodejs\;C:\Users\tassc\AppData\Roaming\npm\;C:\Program Files\Common Files\Autodesk Shared\;C:\Program Files\microsoft SQL Server\120\Tools\Binn\;C:\Users\tassc\AppData\Local\microsoft\WindowsApps;C:\Users\tassc\AppData\Local\GitHubDesktop\bin;C:\Users\tassc\AppData\Local\Programs\microsoft VS Code\bin
9 verbose lifecycle portfolio@0.0.0~copy-index: CWD: C:\Users\tassc\Projects\Portfolio
10 silly lifecycle portfolio@0.0.0~copy-index: Args: [ '/d /s /c',10 silly lifecycle   'Copy-Item -Path ./docs/index.html -Destination ./docs/404.html' ]
11 silly lifecycle portfolio@0.0.0~copy-index: Returned: code: 1  signal: null
12 info lifecycle portfolio@0.0.0~copy-index: Failed to exec copy-index script
13 verbose stack Error: portfolio@0.0.0 copy-index: `Copy-Item -Path ./docs/index.html -Destination ./docs/404.html`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\index.js:301:16)
13 verbose stack     at EventEmitter.emit (events.js:198:13)
13 verbose stack     at ChildProcess.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:198:13)
13 verbose stack     at maybeclose (internal/child_process.js:982:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)
14 verbose pkgid portfolio@0.0.0
15 verbose cwd C:\Users\tassc\Projects\Portfolio
16 verbose Windows_NT 10.0.18362
17 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "run" "copy-index"
18 verbose node v10.16.0
19 verbose npm  v6.9.0
20 error code ELIFECYCLE
21 error errno 1
22 error portfolio@0.0.0 copy-index: `Copy-Item -Path ./docs/index.html -Destination ./docs/404.html`
22 error Exit status 1
23 error Failed at the portfolio@0.0.0 copy-index script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1,true ]