Docker 构建上不可解析的父 POM

Question

我\xe2\x80\x99m 尝试从我的 DockerFile 构建 Docker 映像，但不断收到错误，好像无法找到父级来pom.xml在 docker 文件中执行 Maven 命令并构建项目。\n我一直在四处寻找并您会看到人们所做的就是向子项添加pom.xml对父项 pom.xml 的引用，您尝试relativePath>.. /pom.xml/relativePath>向子项添加 a ，但仍然不起作用。

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Maven 多模块项目

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[

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Docker文件

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FROM alpine/git as clone\nWORKDIR /app\nRUN git clone https://github.com/RicardoVargasLeslie/manager.git\n\nFROM openjdk:8-jdk-alpine as build\nWORKDIR /workspace/app\n\nCOPY mvnw .\nCOPY .mvn .mvn\nCOPY pom.xml .\nCOPY src src\n\nRUN ./mvnw install -DskipTests\n\nENTRYPOINT ["java","-jar","/Web-0.0.1-SNAPSHOT.jar"]\n

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Child-pom.xml（Web）

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<project xmlns="http://maven.apache.org/POM/4.0.0"\n    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"\n    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">\n    <modelVersion>4.0.0</modelVersion>\n    <parent>\n        <groupId>com.imricki.manager</groupId>\n        <artifactId>core</artifactId>\n        <version>0.0.1-SNAPSHOT</version>\n        <relativePath>../pom.xml</relativePath>\n    </parent>\n    <artifactId>Web</artifactId>\n    <name>Web</name>\n    <description>Web Module</description>\n

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父pom.xml（核心）

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<?xml version="1.0" encoding="UTF-8"?>\n<project xmlns="http://maven.apache.org/POM/4.0.0"\n    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"\n    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">\n    <modelVersion>4.0.0</modelVersion>\n    <parent>\n        <groupId>org.springframework.boot</groupId>\n        <artifactId>spring-boot-starter-parent</artifactId>\n        <version>2.1.6.RELEASE</version>\n        <relativePath /> <!-- lookup parent from repository -->\n    </parent>\n    <groupId>com.imricki.manager</groupId>\n    <artifactId>core</artifactId>\n    <version>0.0.1-SNAPSHOT</version>\n    <name>Core</name>\n    <description>Core Module</description>\n    <packaging>pom</packaging>\n

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Docker命令构建镜像

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docker build -t rest-api .\n

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命令行跟踪

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$ docker build -t rest-api .\nSending build context to Docker daemon  42.92MB\nStep 1/11 : FROM alpine/git as clone\n ---> a1d22e4b51ad\nStep 2/11 : WORKDIR /app\n ---> Using cache\n ---> e53f5b4941b5\nStep 3/11 : RUN git clone https://github.com/RicardoVargasLeslie/manager.git\n ---> Using cache\n ---> 490b2afea22c\nStep 4/11 : FROM openjdk:8-jdk-alpine as build\n ---> a3562aa0b991\nStep 5/11 : WORKDIR /workspace/app\n ---> Using cache\n ---> 0b7c106319e9\nStep 6/11 : COPY mvnw .\n ---> Using cache\n ---> 2c7ab0b79d25\nStep 7/11 : COPY .mvn .mvn\n ---> Using cache\n ---> eb9ec36b737a\nStep 8/11 : COPY pom.xml .\n ---> Using cache\n ---> 2296a5fbd6ae\nStep 9/11 : COPY src src\n ---> Using cache\n ---> 022a609f4376\nStep 10/11 : RUN ./mvnw install -DskipTests\n ---> Running in 897cff2e3c3b\n[INFO] Scanning for projects...\n[ERROR] [ERROR] Some problems were encountered while processing the POMs:\n[FATAL] Non-resolvable parent POM for com.imricki.manager:Web:[unknown-version]: Could not find artifact com.imricki.manager:core:pom:0.0.1-SNAPSHOT and \'parent.relativePath\' points at wrong local POM @ line 5, column 10\n @\n[ERROR] The build could not read 1 project -> [Help 1]\n[ERROR]\n[ERROR]   The project com.imricki.manager:Web:[unknown-version] (/workspace/app/pom.xml) has 1 error\n[ERROR]     Non-resolvable parent POM for com.imricki.manager:Web:[unknown-version]: Could not find artifact com.imricki.manager:core:pom:0.0.1-SNAPSHOT and \'parent.relativePath\' points at wrong local POM @ line 5, column 10 -> [Help 2]\n[ERROR]\n[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.\n[ERROR] Re-run Maven using the -X switch to enable full debug logging.\n[ERROR]\n[ERROR] For more information about the errors and possible solutions, please read the following articles:\n[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException\n[ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException\nThe command \'/bin/sh -c ./mvnw install -DskipTests\' returned a non-zero code: 1\n

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我\xe2\x80\x99m 不确定出了什么问题或如何使构建工作，感谢您的帮助。

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Answer 1

Maven 是一种工具，它支持以声明方式管理项目的依赖项。它通过标准化项目共享 jar 和 pom 文件（工件）的方式来实现这一点，并使用 Maven 坐标来声明项目依赖项（groupId、artifactId 和版本），然后在 jar 和 pom 文件的大型公共 Maven 存储库中查找这些依赖项称为 Maven 中心。

为了将您的 jar/pom 文件（例如您的核心）作为 Maven 工件进行管理，您需要将您的工件部署到 Maven Central（任何人都可以访问的公共存储库）或私有网络中某个位置的私有存储库（或者甚至在互联网上，并且可能需要身份验证）。对于私有存储库，您需要包含您的私有存储库，以便您的 Maven 执行不仅在 Maven Central 中查找工件，而且还在您的私有存储库中查找工件。您可以通过将以下内容添加到settings.xml文件中来实现此目的：

<!-- Authentication here -->
<servers>
  <server>
      <id>nexus</id>
      <username>some_username</username>
      <password>some_passowrd</password>
    </server>
</servers>
...
 <profiles>
    <profile>
      <id>nexus</id>
      <!--Override the repository (and pluginRepository) "central" from the
   Maven Super POM -->
      <repositories>
        <repository>
          <id>nexus-release</id>
          <name>nexus-release</name>
          <url>http://hostname_or_ip_address/content/repositories/releases</url>
        </repository>
        <repository>
          <id>nexus-thirdparty</id>
          <name>nexus-thirdparty</name>
          <url>http://hostname_or_ip_address/content/repositories/thirdparty</url>
        </repository>
      </repositories>
      <pluginRepositories>
        <pluginRepository>
          <id>nexus-plugin-release</id>
          <name>nexus-plugin-release</name>
          <url>http://hostname_or_ip_address/content/repositories/releases/</url>
        </pluginRepository>
        <pluginRepository>
          <id>nexus-plugin-third-party</id>
          <name>nexus-plugin-third-party</name>
          <url>http://hostname_or_ip_address/content/repositories/thirdparty/</url>
        </pluginRepository>
      </pluginRepositories>
    </profile>
  </profiles>
...

我注意到您的子pom.xml文件引用了自定义父模块。您需要确保您的父模块位于 Maven 存储库 (Nexus/Artifactory) 中，并且您提供一个settings.xml包含存储库设置的文件，以便 Docker 容器能够拉取父 pom。