Docker:如何将文件从容器中的一个文件夹复制到另一个文件夹？

Question

我想将我编译的 war 文件复制到 Docker 容器中的 tomcat 部署文件夹。如COPY和 ADD处理将文件从主机移动到容器，我试过了

RUN mv /tmp/projects/myproject/target/myproject.war /usr/local/tomcat/webapps/ 

作为对 this question 答案的修改.但我得到了错误

mv: cannot stat ΓÇÿ/tmp/projects/myproject/target/myproject.warΓÇÖ: No such file or directory

如何在同一个容器中从一个文件夹复制到另一个文件夹？

Answer 1

您可以创建多阶段构建:
https://docs.docker.com/develop/develop-images/multistage-build/
在第一阶段构建 .war 文件并命名该阶段，例如构建，像这样:

FROM my-fancy-sdk as build
RUN my-fancy-build #result is your myproject.war 

然后在第二阶段:

FROM my-fancy-sdk as build2
COPY --from=build /tmp/projects/myproject/target/myproject.war /usr/local/tomcat/webapps/