Docker image build fails to explode jar-CodePudding

I'm trying to create a multi-stage Dockerfile

FROM openjdk:11.0.7-jre-slim-buster AS build

... additional commands


RUN mkdir -p target/exploded && (cd target/exploded; jar -xf ../*.jar)

But it fails when trying to explode the .jar file, it is present under the target directory:

 => ERROR [build 7/7] RUN mkdir -p target/exploded && (cd
 target/exploded; jar -xf ../*.jar)
 /bin/sh: 1: jar: not found
 ------
 executor failed running [/bin/sh -c mkdir -p target/exploded && (cd target/exploded; 
 jar -xf ../*.jar)]: exit code: 127

CodePudding user response：

I suggest you to debug where the jar command is, in order to fully address it in your call by a:

RUN find / -name jar

The remove this line and prepend the found path to your jar invocation.

CodePudding user response：

I'm including Spring Cloud Contract as a dependency, it generates a ...stubs.jar file, causing a Docker conflict as it can't choose the proper jar to be exploded, now I'm updating the Dockerfile to target the correct .jar file.