如果我尝试在Windows 10下使用Spring Boot应用程序构建Docker容器,则会出现以下错误:
> Task :docker Failed
COPY Failed: stat /var/lib/docker/tmp/docker-builder711841135/myproject.jar: no such file or directory
我在版本18.03.0-ce-win59(16762)中使用Docker Community Edition,在Java 8中使用Gradle 4.7.
build.gradle(缩写):
plugins {
id 'java'
id 'org.springframework.boot' version '2.0.1.RELEASE'
id "com.palantir.docker" version "0.19.2"
}
version = '2.0.0'
sourceCompatibility = 1.8
group = "com.example"
repositories {
mavenCentral()
}
bootJar {
archiveName 'myproject.jar'
}
dependencies {
...
}
docker {
dependsOn(build)
name "${project.group}/${jar.baseName}"
files bootJar
}
Dockerfile(顶级项目目录中build.gradle的兄弟):
FROM openjdk:8-jre
COPY build/libs/myproject.jar myproject.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/myproject.jar"]
如果我只使用Docker构建Docker容器(没有Gradle),它就能工作.
我怎样才能让Gradle(或Docker?)找到myproject.jar文件?
最佳答案
它适用于docker任务的以下配置:
docker {
dependsOn build
name "${project.group}/${jar.baseName}"
files bootJar.archivePath
buildArgs(['JAR_FILE': "${bootJar.archiveName}"])
}
使用这个略有不同的docker文件:
FROM openjdk:8-jre
ARG JAR_FILE
COPY ${JAR_FILE} app.jar
ENTRYPOINT ["java","/app.jar"]