在构建阶段将.m2文件绑定到docker [英] Bind .m2 file to docker on build stage

问题描述

我试图根据下面的docker文件在docker容器中构建一个spring boot项目，但是每次都从互联网上下载所有mvn依赖项.构建docker文件时如何绑定本地.m2文件.

I tried build a spring boot project in docker container based on below docker file.But every times all mvn dependency download from internet. How can I bind local .m2 file when i build the docker file.

这是我的 Dockerfile

FROM maven:3.5-jdk-8-alpine AS build 
COPY /src /usr/src/javaspring/src
COPY pom.xml /usr/src/javaspring
COPY Dockerfile /usr/src/javaspring
RUN mvn -f /usr/src/javaspring/pom.xml clean install


FROM openjdk:8-jre-alpine
COPY --from=build /usr/src/javaspring/target/javaspring-1.0.jar app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

推荐答案

您应将项目内容装入docker映像中，并将 $ HOME/.m2/装入映像中，而不要复制一切都放入图像中并建立新图像.

You should mount the content of your project into the docker image and the $HOME/.m2/ into the image instead of copying everything into the image and building a new image..

$ PWD 是您的 pom.xml 文件所在的本地目录，并且 src 目录存在...

The $PWD is the local directory where your pom.xml file is located and the src directory exists...

docker run -it --rm \
  -v "$PWD":/usr/src/mymaven \ (1)
  -v "$HOME/.m2":/root/.m2 \ (2)
  -v "$PWD/target:/usr/src/mymaven/target" \ (3)
  -w /usr/src/mymaven \ (4)
  maven:3.5-jdk-8-alpine \ (5)
  mvn clean package

1. 定义 pom.xml 所在的工作目录的位置.
2. 定义本地缓存的位置.
3. 定义目标目录以将其映射到给定路径下的图像中
4. 定义工作目录.
5. 定义要使用的图像的名称.

1. defines the location of your working directory where pom.xml is located.
2. defines the location where you have located your local cache.
3. defines the target directory to map it into the image under the given path
4. defines the working directory.
5. defines the name of the image to be used.

因此，您无需创建新图像即可使用Maven构建自己的东西.只需通过以下命令运行现有映像:

So you don't need to create an new image to build your stuff with Maven. Simply run an existing image via the following command:

docker run -it --rm \
  -v "$PWD":/usr/src/mymaven \
  -v "$HOME/.m2":/root/.m2 \
  -v "$PWD/target:/usr/src/mymaven/target" \ 
  -w /usr/src/mymaven \
  maven:3.5-jdk-8-alpine mvn clean package

这篇关于在构建阶段将.m2文件绑定到docker的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！