You can provide build configuration such as translation file path, name, format and application url in configuration
settings of Angular.json file. For example, the German version of your application configured the build as follows,
"configurations": {
"de": {
"aot": true,
"outputPath": "dist/my-project-de/",
"baseHref": "/fr/",
"i18nFile": "src/locale/messages.de.xlf",
"i18nFormat": "xlf",
"i18nLocale": "de",
"i18nMissingTranslation": "error",
}