Docker: problem with run a file jar in docker

I’m new in the community and i’m new in docker’s world. i have to virtualize a leshan server through docker and I have to do this with the option “–redis” that leshan makes avaible. so I decided to take a dockerfile from docker hub and modify the last “CMD” operation adding the option “–redis”. The Build of images is successful but when i try to run the image in a container the error is “Invalid or corrupt jarfile”. This problem show up also without the option “–redis” (with the no modify dockerfile). The strange thing is that if I pull the image from dockerhub and run the server build through same dockerfile, it works!

This is the docker file:

FROM linarotechnologies/alpine:edge

RUN apk add --no-cache openjdk8-jre-base ca-certificates shadow curl

RUN mkdir -p /opt/leshan-server-demo && 
    curl -o /opt/leshan-server-demo/leshan-server-demo.jar
RUN useradd -r -d /opt/leshan-server-demo -s /sbin/nologin -U leshan

CMD cd /tmp && chpst -u leshan java -jar /opt/leshan-server-demo/leshan-server-demo.jar $LESHAN_ARGS

this is the build:

Sending build context to Docker daemon  7.294MB
Step 1/5 : FROM linarotechnologies/alpine:edge
 ---> 7463224280b0
Step 2/5 : RUN apk add --no-cache openjdk8-jre-base ca-certificates shadow curl runit
 ---> Using cache
 ---> ebe6e6280cdf
Step 3/5 : RUN mkdir -p /opt/leshan-server-demo &&     curl -o /opt/leshan-server-demo/leshan-server-demo.jar
 ---> Using cache
 ---> 52b61160e8c5
Step 4/5 : RUN useradd -r -d /opt/leshan-server-demo -s /sbin/nologin -U leshan
 ---> Using cache
 ---> 53419af60e36
Step 5/5 : CMD cd /tmp && chpst -u leshan java -jar /opt/leshan-server-demo/leshan-server-demo.jar $LESHAN_ARGS#
 ---> Running in 52cb5fc95ffb
Removing intermediate container 52cb5fc95ffb
 ---> 68acab7c306e
Successfully built 68acab7c306e
Successfully tagged leshan-server:latest

And this is the error when i run:

sudo docker run --rm -ti --name leshan-server leshan-server
Error: Invalid or corrupt jarfile /opt/leshan-server-demo/leshan-server-demo.jar

Any ideas? Thank you for help!

Source: StackOverflow