我的build.gradle设置如下（为简洁起见，仅列出插件）

plugins {
  id 'java'
  id 'maven-publish'
  id 'signing'
  id 'org.springframework.boot' version '2.2.2.RELEASE'
  id 'io.spring.dependency-management' version '1.0.8.RELEASE'
  id 'com.limark.gitflowsemver' version '0.3.1'
  id 'com.google.cloud.tools.jib' version '1.8.0'
}
...
group = 'com.app.my'
// The below line remains commented
// version = '0.1.0' 
...

jib {
  from {
    image = 'azul/zulu-openjdk-alpine:11-jre'
  }
  to {
    image = 'aws_account_id.dkr.ecr.region.amazonaws.com/my-app'
    tags = [version]
  }
  container {
    format = 'OCI'
  }
}

publishing {
  repositories {
    maven {
      def releasesRepoUrl = "http://localhost:8081/repository/maven-releases/"
      def snapshotsrepoUrl = "http://localhost:8081/repository/maven-snapshots/"
      url = version.endsWith('snAPSHOT') ? snapshotsrepoUrl : releasesRepoUrl
      credentials {
        username nexususername
        password nexusPassword
      }
    }
  }
  publications {
    mavenJava(MavenPublication) {
      artifactId = 'my-app'
      from components.java
      pom {
        name = 'My App'
        description = 'My App'
        url = 'https://my-app.com'
        developers {
          developer {
            id = 'john'
            name = 'John Doe'
            email = 'an.emaill@address.here'
          }
        }
        scm {
          connection = 'scm:git:ssh://git@bitbucket.org:acme/my-app.git'
          developerConnection = 'scm:git:ssh://git@bitbucket.org:acme/my-app.git'
          url = 'https://bitbucket.org/acme/my-app'
        }
      }
    }
  }
}

signing {
  sign publishing.publications.mavenJava
}

gitflowsemver plugin根据GitFlow分支策略更新project.version。 publish任务能够访问gitflowsemver插件更新的版本，但是当我尝试使用jib构建docker映像时，它没有使用更新的版本标记映像。它始终标记为unspecified。但是，如果我取消注释version = '0.1.0'行，那么jib插件就可以使用该版本。我不明白为什么。非常感谢您的帮助。