我已经设置了一个dockerfile和docker撰写文件的离子应用程序。我可以在我的计算机上使用放在my package.json上的“start”脚本进行测试：

{
  "name": "CryptoWallet",
  "version": "0.0.1",
  "description": "",
  "scripts": {
    "start": "ionic serve --external",
    "buildandroid": "ionic cordova build --release android"
  },
  "devDependencies": {
    "cordova-android": "^9.0.0",
    "gulp": "^3.5.6",
    "gulp-clean-css": "^3.7.0",
    "gulp-rename": "^1.2.0",
    "gulp-sass": "^3.1.0"
  },
  "dependencies": {
    "@ionic/v1-toolkit": "^3.2.14",
    "cordova": "^10.0.0",
    "cordova-plugin-device": "^2.0.1",
    "cordova-plugin-ionic-keyboard": "^2.0.5",
    "cordova-plugin-ionic-webview": "^1.1.16",
    "cordova-plugin-splashscreen": "^5.0.2",
    "cordova-plugin-whitelist": "^1.3.3",
    "cordova-res": "^0.15.2",
    "ionic": "^5.4.16"
  },
  "cordova": {
    "plugins": {
      "cordova-plugin-whitelist": {

      },
      "cordova-plugin-device": {

      },
      "cordova-plugin-splashscreen": {

      },
      "cordova-plugin-ionic-webview": {

      },
      "cordova-plugin-ionic-keyboard": {

      }
    },
    "platforms": [
      "android"
    ]
  }
}

然后我想使用“buildandroid”脚本创建一个apk版本（ionic cordova build——release android）。如果我在docker之外做的话，它可以工作，但是apk当然没有所有的依赖项（只在docker内部设置），而且在我的android手机上安装之后，它也不能很好地工作。因此，我应该把androidsdk、jdk和gradle放在project文件夹中，一个接一个地复制到docker文件中。这是我的dockerfile.dev：

FROM node:13-alpine as build

WORKDIR /app

ENV JAVA_HOME /app/www/jdk1.8.0_211
ENV ANDROID_HOME /app/www/Sdk
ENV ANDROID_SDK_ROOT /app/www/Sdk
ENV PATH $PATH:/app/www/Sdk/platform-tools
ENV PATH $PATH:/app/www/jdk1.8.0_211/bin
ENV PATH $PATH:/app/www/gradle-6.7.1/bin

COPY package*.json /app/

RUN npm install --prefix ./www @gmwallet/lib@latest
RUN npm install --prefix ./www @gmwallet/app-common@latest
RUN npm install --save --prefix ./www angular-resource@1.4.8

COPY ./ ./

CMD ["npm", "run", "buildandroid"]

@gmwallet是我在npmjs上发布的项目依赖项，它们可以工作。sdk、jdk和gradle直接复制到我的应用程序的“www”文件夹中。环境变量直接指向docker中的这些文件夹（我试图在容器中找到它们，并成功地找到了它们）。实际上，我使用docker-compose.yml运行dockerfile：

version: "3"

services:
    web:
        build:
            context: .
            dockerfile: Dockerfile.dev
        ports:
            - "8100:8100"
        volumes:
            - /app/node_modules
            - /app/www/lib/node_modules
            - /app/www/node_modules
            - .:/app    
        stdin_open: true
        environment:
            - CHOKIDAR_USEPOLLING=true

我遇到的问题是关于环境变量，它记录如下：

web_1  | Checking Java JDK and Android SDK versions
web_1  | ANDROID_SDK_ROOT=/app/www/Sdk (recommended setting)
web_1  | ANDROID_HOME=/app/www/Sdk (DEPRECATED)
web_1  | Failed to run "javac -version", make sure that you have a JDK version 8 installed.
web_1  | You can get it from the following location:
web_1  | https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
web_1  |
web_1  | Your JAVA_HOME is invalid: /app/www/jdk1.8.0_211
web_1  | [ERROR] An error occurred while running subprocess cordova.
web_1  |
web_1  |         cordova build android --release exited with exit code 1.
web_1  |
web_1  |         Re-running this command with the --verbose flag may provide more information.
web_1  | npm ERR! code ELIFECYCLE
web_1  | npm ERR! errno 1
web_1  | npm ERR! CryptoWallet@0.0.1 buildandroid: `ionic cordova build --release android`
web_1  | npm ERR! Exit status 1
web_1  | npm ERR!
web_1  | npm ERR! Failed at the CryptoWallet@0.0.1 buildandroid script.
web_1  | npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
web_1  |
web_1  | npm ERR! A complete log of this run can be found in:
web_1  | npm ERR!     /root/.npm/_logs/2020-12-31T02_54_00_801Z-debug.log
cryptowallet_web_1 exited with code 1

问题是：如何为sdk和jdk定义一个有效的环境变量？也许使用npm run安装依赖项比将它们复制到文件夹更好(现在，这只是为了测试，如果它工作，我会把sdk和jdk在另一个库中的npmjs，以便安装其他的。我不知道，这很奇怪。环境变量设置得很好，并且文件夹存在于容器中。实际上，我用的是离子1。我在Windows10环境中使用docker桌面