dockerfile 中的 路径改为绝对路径就可以了
修改之前 dockerfile
FROM hub.c.163.com/library/java
COPY xx.jar /xx.jar
CMD java -jar /xx.jar
EXPOSE 9090
修改之后的dockerfile
FROM hub.c.163.com/library/java
COPY /xxx.jar /usr/local/xx/springBoot/xx/xx/docker/xxx.jar
CMD java -jar /usr/local/xx/springBoot/xx/xx/docker/xxx.jar
EXPOSE 9090