如何将副本添加到build.gradle

有人能告诉我如何向我的build.gradle文件添加复制命令吗？这是我由项目生成的build.gradle（除了我添加的2个def之外）：

apply plugin: 'com.android.application'

def sampleEnvSrc = System.getProperty("user.dir") + '/../../sampleEnv'
def sampleEnvDestDir = System.getProperty("user.dir") + '/app/src/main/assets/public/'

android {
    compileSdkVersion rootProject.ext.compileSdkVersion
    defaultConfig {
        applicationId "org.capacitor.quasar.sickdiary"
        minSdkVersion rootProject.ext.minSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        aaptOptions {
            ignoreAssetsPattern '!.svn:!.git:!.ds_store:!*.scc:.*:!CVS:!thumbs.db:!picasa.ini:!*~'
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

repositories {
    flatDir{
        dirs '../capacitor-cordova-android-plugins/src/main/libs', 'libs'
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation "androidx.appcompat:appcompat:$androidxAppCompatVersion"
    implementation project(':capacitor-android')
    testImplementation "junit:junit:$junitVersion"
    androidTestImplementation "androidx.test.ext:junit:$androidxJunitVersion"
    androidTestImplementation "androidx.test.espresso:espresso-core:$androidxEspressoCoreVersion"
    implementation project(':capacitor-cordova-android-plugins')
}

apply from: 'capacitor.build.gradle'

try {
    def servicesJSON = file('google-services.json')
    if (servicesJSON.text) {
        apply plugin: 'com.google.gms.google-services'
    }
} catch(Exception e) {
    logger.info("google-services.json not found, google-services plugin not applied. Push Notifications won't work")
}

不幸的是，我对gradle语法一无所知（而且gradle文档也帮不了什么忙）。

我需要的是将sampleEnvSrc下的此文件复制到此目标sampleEnvDestDir，然后将其重命名为.env

我真的很感激你的帮助，因为我花了这么多小时都没有取得任何成功，现在我也快疯了。

提前Thx