Unable to access jarfile from docker run command for java maven project

Question

Build docker images using docker file for maven project

When try running docker run getting error saying Unable to access jarfile.

Can some one assist on whats wrong with .

FROM openjdk:8-jre-alpine as release
RUN addgroup -g 1001 -S user1 && user1 -u 1001 -S user1 -G user1
WORKDIR /home/app
COPY --from=builder /home/app/service-1.0.0.jar .
RUN chown -R user1:user1 /home/app
USER user1
ENTRYPOINT  ["java", "-jar" ,"/home/app/service-1.0.0.jar"]

but when i go for docker run with local config files as build mount

docker run -it --mount type=bind,source=D:/Java/service/docker/config,target=/home/app services 

Unable to access jarfile /home/app/service-1.0.0.jar

Can someone assist on this or is something wrong i did??

Answer 1

I am not sure if you are looking for multistage docker build. If not, you need not use "COPY --from=builder" as it tires to copy the build artifact from your previous stage to this new stage. If it is a single stage docker build, you might just use the copy as follows -

COPY /home/app/service-1.0.0.jar .

Answer 2

Able to resolve the same, Issue was due to mound of config files not happened properly.

instead of docker run -it --mount type=bind,source=D:/Java/service/docker/config,target=/home/app services changes it to docker run -it --mount type=bind,source=D:/Java/service/docker/config/app.config,target=/home/app services which made service to load and work