没有为此构建指定目标。您必须指定一个有效的生命周期阶段
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【中文标题】没有为此构建指定目标。您必须指定一个有效的生命周期阶段【英文标题】：No goals have been specified for this build. You must specify a valid lifecycle phase 【发布时间】：2021-05-01 20:33:01 【问题描述】：我在尝试通过 GitHub Actions 推送到 docker 时不断收到来自标题的错误。我有一个 Java Maven 应用程序。 当我手动构建和推送 docker 镜像时，一切正常，但它不能通过标题中指定的 GitHub Actions 自动运行。
这是我的工作流程操作：
name: Docker Image CI
on:
workflow_dispatch:
push:
branches: [ main ]
pull_request:
branches: [ main ]
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Set up JDK 8
uses: actions/setup-java@v1
with:
java-version: 8
- name: Setup the POM file
run: mvn -f app-demo/pom.xml
- name: Build with Maven
run: mvn clean install dependency:copy-dependencies
- name: Login to GitHub Package Registry
run: echo $ secrets.GITHUB_TOKEN | docker login docker.pkg.github.com -u $ github.repository --password-stdin
- name: Build the Docker image
run: docker build -t app-demo:latest .
- name: Tag the Docker image
run: docker tag app-demo:latest docker.pkg.github.com/repo/app-demo/app-demo:latest
- name: Push the Docker image to the registry
run: docker push docker.pkg.github.com/repo/app-demo/app-demo:latest
这是我的 POM 文件：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.app.demo</groupId>
<artifactId>app-demo</artifactId>
<version>latest</version>
<name>acs-simulator</name>
<description>APP Demo</description>
<properties>
<java.version>8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-core</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.hivemq</groupId>
<artifactId>hivemq-mqtt-client</artifactId>
<version>1.2.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.11.2</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
<dependency>
<groupId>com.hivemq</groupId>
<artifactId>hivemq-testcontainer-junit5</artifactId>
<version>1.0.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.6.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.6.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.10.19</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.eclipse.paho</groupId>
<artifactId>org.eclipse.paho.client.mqttv3</artifactId>
<version>1.2.5</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version> 3.2.2</version>
<configuration>
<createDependencyReducedPom>false</createDependencyReducedPom>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
我遇到了这个错误，我该如何解决？提前谢谢你。
【问题讨论】：
为什么在 Spring Boot 应用中使用 maven-shade-plugin？为什么要自己定义 JUnit Jupiter 版本？为什么要自己定义 mockito-all 版本？所有版本都由 spring boot 父级处理......我也建议将你的 spring boot 版本升级到最新版本（2.4.2）......Jackson 也是由 spring boot 定义的父... 【参考方案1】：问题是这样的，我认为：
- name: Setup the POM file
run: mvn -f app-demo/pom.xml
- name: Build with Maven
run: mvn clean install dependency:copy-dependencies
第一个run: 正在运行没有任何目标的maven。你需要一次运行......像这样：
- name: Build with Maven
run: mvn -f app-demo/pom.xml clean install dependency:copy-dependencies
无论哪种方式，请检查 Maven documentation 以了解 mvn 命令行参数的含义。
【讨论】：
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