使用 Paketo Buildpacks 容器化 Angular 应用程序：空回复

Question

我想使用 Paketo buildpack for nodejs 创建我的 Angular 12 应用程序的容器映像。我通过 Angular CLI 创建了应用程序并将其编码到现在我想部署它。

为了创建容器，我遵循了 paketo 示例存储库中的说明和运行这个命令：

pack build myui --buildpack gcr.io/paketo-buildpacks/nodejs --env "BP_NODE_RUN_SCRIPTS=build" --env "NODE_ENV=development"

只要删除运行 pack.

之前的 node_modules 目录就可以正常工作

现在我想在本地测试图像并尝试使用

启动它

docker run --tty --publish 4200:4200 myui

看来启动成功了：

✔ Browser application bundle generation complete.

Initial Chunk Files | Names         |      Size
main.js             | main          |   6.14 MB
vendor.js           | vendor        |   4.22 MB
styles.css          | styles        | 159.33 kB
polyfills.js        | polyfills     | 128.67 kB
runtime.js          | runtime       |   6.56 kB

                    | Initial Total |  10.65 MB

Build at: 2021-08-13T10:06:14.282Z - Hash: 5351646d56eaa8873a38 - Time: 15305ms

** Angular Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **


✔ Compiled successfully.
✔ Browser application bundle generation complete.

5 unchanged chunks

Build at: 2021-08-13T10:06:15.412Z - Hash: 149b56c677aa74ba2361 - Time: 577ms

✔ Compiled successfully.

现在问题来了：

➜  ~ docker ps
CONTAINER ID   IMAGE     COMMAND              CREATED          STATUS          PORTS                                       NAMES
6a29ce4cdc86   myui      "/cnb/process/web"   11 minutes ago   Up 11 minutes   0.0.0.0:4200->4200/tcp, :::4200->4200/tcp   confident_grothendieck
➜  ~ curl -vvv http://localhost:4200/
*   Trying ::1...
* TCP_NODELAY set
* Connected to localhost (::1) port 4200 (#0)
> GET / HTTP/1.1
> Host: localhost:4200
> User-Agent: curl/7.64.1
> Accept: */*
>
* Empty reply from server
* Connection #0 to host localhost left intact
curl: (52) Empty reply from server
* Closing connection 0
➜  ~

有人知道哪里出了问题吗？

编辑：目前我最好的猜测是 ng serve 监听 127.0.0.1:4200 但应该监听 0.0.0.0:4200 以便流量通过.但我不确定在哪里寻找配置。在构建包中？在angular.cli？其他地方？

编辑：根据要求，pack 命令的完整输出：

➜  ui2 git:(master) pack build myui --buildpack gcr.io/paketo-buildpacks/nodejs --env "BP_NODE_RUN_SCRIPTS=build" --env "NODE_ENV=development"
full: Pulling from paketobuildpacks/builder
Digest: sha256:b34eb3b43d6bf20623ad92523e9e1a055289e74a2fa661adee5d1d90e25afd48
Status: Image is up to date for paketobuildpacks/builder:full
full-cnb: Pulling from paketobuildpacks/run
Digest: sha256:691eb052281456ab5b5a62d1a0e5a67bf7246783565bbecd239c5c9cf1bf51ec
Status: Image is up to date for paketobuildpacks/run:full-cnb
latest: Pulling from paketo-buildpacks/nodejs
Digest: sha256:9887bb6b7d0c410ccdf6fa940658dddecfce5ded1ac5696ced608c78649594b3
Status: Image is up to date for gcr.io/paketo-buildpacks/nodejs:latest
===> DETECTING
5 of 8 buildpacks participating
paketo-buildpacks/ca-certificates 2.3.2
paketo-buildpacks/node-engine     0.6.2
paketo-buildpacks/npm-install     0.4.0
paketo-buildpacks/node-run-script 0.1.0
paketo-buildpacks/npm-start       0.3.0
===> ANALYZING
Previous image with name "myui" not found
===> RESTORING
===> BUILDING

Paketo CA Certificates Buildpack 2.3.2
  https://github.com/paketo-buildpacks/ca-certificates
  Launch Helper: Contributing to layer
    Creating /layers/paketo-buildpacks_ca-certificates/helper/exec.d/ca-certificates-helper
Paketo Node Engine Buildpack 0.6.2
  Resolving Node Engine version
    Candidate version sources (in priority order):
                -> ""
      <unknown> -> ""

    Selected Node Engine version (using ): 14.17.5

  Executing build process
    Installing Node Engine 14.17.5
      Completed in 7.96s

  Configuring build environment
    NODE_ENV     -> "development"
    NODE_HOME    -> "/layers/paketo-buildpacks_node-engine/node"
    NODE_VERBOSE -> "false"

  Configuring launch environment
    NODE_ENV     -> "production"
    NODE_HOME    -> "/layers/paketo-buildpacks_node-engine/node"
    NODE_VERBOSE -> "false"

    Writing profile.d/0_memory_available.sh
      Calculates available memory based on container limits at launch time.
      Made available in the MEMORY_AVAILABLE environment variable.

Paketo NPM Install Buildpack 0.4.0
  Resolving installation process
    Process inputs:
      node_modules      -> "Not found"
      npm-cache         -> "Not found"
      package-lock.json -> "Found"

    Selected NPM build process: 'npm ci'

  Executing build process
    Running 'npm ci --unsafe-perm --cache /layers/paketo-buildpacks_npm-install/npm-cache'
      Completed in 23.58s

  Configuring launch environment
    NPM_CONFIG_LOGLEVEL -> "error"

  Configuring environment shared by build and launch
    PATH -> "$PATH:/layers/paketo-buildpacks_npm-install/modules/node_modules/.bin"


Paketo Node Run Script Buildpack 0.1.0
  Executing build process
    Executing scripts
      Running 'npm run-script build'

        > edit@0.0.0 build /workspace
        > ng build

        - Generating browser application bundles (phase: setup)...
        Compiling @angular/core : es2015 as esm2015
        Compiling @angular/cdk/keycodes : es2015 as esm2015
        Compiling @angular/animations : es2015 as esm2015
        Compiling @angular/animations/browser : es2015 as esm2015
        Compiling @angular/cdk/observers : es2015 as esm2015
        Compiling @angular/common : es2015 as esm2015
        Compiling @angular/cdk/collections : es2015 as esm2015
        Compiling @angular/platform-browser : es2015 as esm2015
        Compiling @angular/cdk/platform : es2015 as esm2015
        Compiling @angular/cdk/bidi : es2015 as esm2015
        Compiling @angular/platform-browser/animations : es2015 as esm2015
        Compiling @angular/cdk/a11y : es2015 as esm2015
        Compiling @angular/forms : es2015 as esm2015
        Compiling @angular/flex-layout/core : es2015 as esm2015
        Compiling @angular/cdk/scrolling : es2015 as esm2015
        Compiling @angular/cdk/portal : es2015 as esm2015
        Compiling @angular/cdk/layout : es2015 as esm2015
        Compiling @angular/material/core : es2015 as esm2015
        Compiling @angular/common/http : es2015 as esm2015
        Compiling @angular/cdk/overlay : es2015 as esm2015
        Compiling @angular/flex-layout/extended : es2015 as esm2015
        Compiling @angular/material/button : es2015 as esm2015
        Compiling @angular/flex-layout/flex : es2015 as esm2015
        Compiling @angular/flex-layout/grid : es2015 as esm2015
        Compiling @angular/platform-browser-dynamic : es2015 as esm2015
        Compiling @angular/router : es2015 as esm2015
        Compiling @angular/material/sidenav : es2015 as esm2015
        Compiling @angular/material/snack-bar : es2015 as esm2015
        Compiling @angular/material/toolbar : es2015 as esm2015
        Compiling @angular/material/icon : es2015 as esm2015
        Compiling @angular/flex-layout : es2015 as esm2015
        Compiling @angular/material/tabs : es2015 as esm2015
        ✔ Browser application bundle generation complete.
        ✔ Browser application bundle generation complete.
        - Copying assets...
        ✔ Copying assets complete.
        - Generating index html...
        ✔ Index html generation complete.

        Initial Chunk Files               | Names         |       Size
        main.a6760a1641b4d1eaecd4.js      | main          |    4.50 MB
        styles.8a29e51b15a5b6e5b823.css   | styles        |   90.06 kB
        polyfills.a6c44b054b34d2bec03f.js | polyfills     |   35.96 kB
        runtime.543bd02f52b0afc6ba6a.js   | runtime       | 1015 bytes

        | Initial Total |    4.63 MB

        Build at: 2021-08-16T15:19:15.350Z - Hash: 0958e10b7d5232954d2e - Time: 46738ms

        ./src/app/footer/footer.component.scss - Warning: Module Warning (from ../layers/paketo-buildpacks_npm-install/modules/node_modules/postcss-loader/dist/cjs.js):
        Warning

        (7:3) postcss-preset-env: start value has mixed support, consider using flex-start instead

        ./src/app/home/home.component.scss - Warning: Module Warning (from ../layers/paketo-buildpacks_npm-install/modules/node_modules/postcss-loader/dist/cjs.js):
        Warning

        (84:3) postcss-preset-env: start value has mixed support, consider using flex-start instead

        ./src/app/home/home.component.scss - Warning: Module Warning (from ../layers/paketo-buildpacks_npm-install/modules/node_modules/postcss-loader/dist/cjs.js):
        Warning

        (85:3) postcss-preset-env: start value has mixed support, consider using flex-start instead

        Warning: /workspace/src/app/resize.service.ts depends on 'element-resize-detector'. CommonJS or AMD dependencies can cause optimization bailouts.
        For more info see: https://angular.io/guide/build#configuring-commonjs-dependencies

        Warning: initial exceeded maximum budget. Budget 500.00 kB was not met by 4.14 MB with a total of 4.63 MB.



      Completed in 51.831s

Paketo NPM Start Buildpack 0.3.0
  Assigning launch processes
    web: ng serve

===> EXPORTING
Adding layer 'paketo-buildpacks/ca-certificates:helper'
Adding layer 'paketo-buildpacks/node-engine:node'
Adding layer 'paketo-buildpacks/npm-install:modules'
Adding layer 'paketo-buildpacks/npm-install:npm-cache'
Adding 1/1 app layer(s)
Adding layer 'launcher'
Adding layer 'config'
Adding layer 'process-types'
Adding label 'io.buildpacks.lifecycle.metadata'
Adding label 'io.buildpacks.build.metadata'
Adding label 'io.buildpacks.project.metadata'
Setting default process type 'web'
Saving myui...
*** Images (b9cd591df4be):
      myui
Adding cache layer 'paketo-buildpacks/node-engine:node'
Adding cache layer 'paketo-buildpacks/npm-install:modules'
Adding cache layer 'paketo-buildpacks/npm-install:npm-cache'
Successfully built image myui

Answer 1

我会在回答前说，有多种方法可以做到这一点。以下是我建议的两种方式：

本地构建

本地构建，就像在您的机器上运行 npm build。
添加一个 buildpack.yml 文件：
```
staticfile:
  nginx:
    pushstate: true
```
这将指示静态文件 buildpack 生成支持 pushstate 的 Nginx 配置，这通常是单页 Javascript 应用程序所需要的。
运行 pack build myui -b paketo-buildpacks/nginx -b paketo-community/staticfile -p dist/. dist/ 是第 1 步构建过程输出的路径（即静态 HTML/CSS/Javascript 所在的位置）。

确保您的 dist/ 路径包含您在上一步中创建的 buildpack.yml 文件。 这是静态文件构建包通过检测所必需的.如果您在尝试构建时看到 No buildpack groups passed detection，这可能就是原因。
然后您可以执行 docker run -d -e PORT=8080 -p 8080:8080 myui 它会运行您的图像。生成的 nginx.conf 期望 PORT 设置为您希望它监听的某个端口。只需确保您 select 的端口与参数 -p 匹配，因此 docker 公开相同的端口。

在本地构建的优点是它很简单并且适用于大多数应用程序，因为构建的输出只是静态 HTML/CSS/JS 和其他资产文件。该 buildpack 仅添加了 Nginx，您就可以参加比赛了。

Buildpacks 构建

添加一个 buildpack.yml 文件：
```
staticfile:
  nginx:
    pushstate: true
```
这将指示静态文件 buildpack 生成支持 pushstate 的 Nginx 配置，这通常是单页 Javascript 应用程序所需要的。

确保您创建的 buildpack.yml 文件位于项目的根目录，即您在下一步中运行 pack build 所在的目录。 这是静态文件构建包通过检测所必需的。如果您在尝试构建时看到 No buildpack groups passed detection，这可能就是原因。
运行 pack build myui -b paketo-buildpacks/nodejs --env "BP_NODE_RUN_SCRIPTS=build" --env "NODE_ENV=development" --buildpack paketo-buildpacks/nginx --buildpack paketo-community/staticfile

这将确保安装了 Node 和 NPM，然后它将运行 npm build。这将从您的应用程序生成静态文件资源。然后 Nginx 和静态文件 buildpack 将运行安装和配置 Nginx 以托管您应用程序的静态文件。

它类似于本地构建，但不需要您在本地安装 Node 或 NPM。构建包将安装它们并在容器内构建。

我建议使用这两个构建过程之一的原因是，任何一个都会产生一个很小的启动容器，并且只包含您的静态文件和 Nginx。这将比使用构建工具的开发服务器安装 Node.js 更小、更高效、更适合生产。

使用 Paketo Buildpacks 容器化 Angular 应用程序：空回复

Containerizing Angular Application With Paketo Buildpacks: Empty Reply

node.js

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本地构建

Buildpacks 构建