这可能是一个重复的问题，但我已经搜索了很多，我找不到一个答案，工作。我确信我犯了一个简单的错误，但我就是想不出来。
我使用Gradle wrapper 7.6创建了一个简单的核心Java项目。
我可以使用docker build命令创建一个docker镜像，但当我运行该命令时，我得到了以下错误：

Could not find or load main class io.confluent.developer.ParallelConsumerApplication

下面是dockerfile：

FROM gradle:7.6.1-jdk8 AS builder
WORKDIR /app
COPY build.gradle ./
RUN gradle build --scan --stacktrace 
FROM adoptopenjdk/openjdk8:alpine-jre
WORKDIR /app
COPY --from=builder /app/build/libs/*.jar .
ENTRYPOINT ["java", "-jar", "app-0.0.1-plain.jar"]

下面是build.gradle文件：

buildscript {
        repositories {
            mavenCentral()
        }
        dependencies {
            classpath "com.github.jengelman.gradle.plugins:shadow:6.1.0"
        }
    }
    
    plugins {
        id "maven-publish"
        id "java"
        id 'org.springframework.boot' version '2.7.1'
    }
    
    //sourceCompatibility = JavaVersion.VERSION_17
    //targetCompatibility = JavaVersion.VERSION_17
    version = "0.0.1"
    
    repositories {
        mavenCentral()
        maven {
            url "https://packages.confluent.io/maven"
        }
    }
    
    apply plugin: "com.github.johnrengelman.shadow"
    //apply plugin: 'org.springframework.boot'
    apply plugin: 'io.spring.dependency-management'
    
    dependencies {
        implementation "io.confluent.parallelconsumer:parallel-consumer-core:0.5.2.4"
        implementation "org.apache.avro:avro:1.11.1"
        implementation "io.confluent:kafka-avro-serializer:3.3.0"
        implementation "org.springframework.boot:spring-boot-starter-web"
        implementation "org.codehaus.jackson:jackson-core-asl:1.9.13"
        implementation "org.codehaus.jackson:jackson-mapper-asl:1.9.13"
        implementation "org.apache.commons:commons-lang3:3.12.0"
        implementation "org.slf4j:slf4j-simple:2.0.0"
        implementation "me.tongfei:progressbar:0.9.3"
        implementation 'org.awaitility:awaitility:4.2.0'
        implementation("log4j:log4j:1.2.17")
    
        testImplementation "junit:junit:4.13.2"
        testImplementation 'org.awaitility:awaitility:4.2.0'
        testImplementation "io.confluent.parallelconsumer:parallel-consumer-core:0.5.2.4:tests" // for LongPollingMockConsumer
    }
    
    test {
        testLogging {
            outputs.upToDateWhen { false }
            showStandardStreams = true
            exceptionFormat = "full"
        }
    }
    
    bootJar {
        enabled = false
    }
    
    
    jar {
      manifest {
        attributes(
          "Class-Path": configurations.compileClasspath.collect { it.getName() }.join(" "),
          'Main-Class': 'io.confluent.developer.ParallelConsumerApplication',
        )
      }
    }
    
    
    shadowJar {
        archiveBaseName = "confluent-parallel-consumer-application-standalone"
    }

这不是一个spring Boot 应用程序，我只是在项目中使用RestTemplate进行API调用。
任何帮助都很感激。先谢谢你了。