Docker: problem with run a file jar in docker

Question

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
runit

RUN mkdir -p /opt/leshan-server-demo && \
    curl -o /opt/leshan-server-demo/leshan-server-demo.jar \
    https://hudson.eclipse.org/leshan/job/leshan/lastSuccessfulBuild/artifact/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         https://hudson.eclipse.org/leshan/job/leshan/lastSuccessfulBuild/artifact/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!

You can try to clean your build cache and then build the image again. If you once got an invalid jar you still have it cached. — Henry, Jun 11 '20 at 08:14
Is there a chance that the error is right and you simply have a corrupt JAR file? Does that JAR file work properly in other settings? https://stackoverflow.com/questions/7559072/corrupt-jar-file — QA Collective, Jun 11 '20 at 22:54

score 1 · Answer 1 · answered Jun 11 '20 at 08:53

1

https://hudson.eclipse.org/leshan/job/leshan/lastSuccessfulBuild/artifact/leshan-server-demo.jar

This url has redirect with 302. You have to use -L parameter with curl to follow the link.

answered Jun 11 '20 at 08:53

librhnylmz

11
1

I add the -L parameter but when i run the image show this error: 'Exception in thread "main" java.lang.ExceptionInInitializerError' – Antonio Romano Jun 11 '20 at 09:26

score 0 · Answer 2 · answered Jun 11 '20 at 09:03

~# curl -o test.jar https://hudson.eclipse.org/leshan/job/leshan/lastSuccessfulBuild/artifact/leshan-server-demo.jar

~# cat leshan-server-demo.jar
<html>
<head><title>302 Found</title></head>
<body>
<center><h1>302 Found</h1></center>
<hr><center>nginx</center>
</body>
</html>

curl is downloading the html redirect page.

You can tell curl to follow the redirects using -L option.

/opt/leshan-server-demo # curl -L -o test.jar https://hudson.eclipse.org/leshan/job/leshan/lastSuccessfulBuild/artifact/leshan-server-demo.
jar
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   138  100   138    0     0    316      0 --:--:-- --:--:-- --:--:--   315
100 7618k  100 7618k    0     0   622k      0  0:00:12  0:00:12 --:--:--  481k
/opt/leshan-server-demo #

Docker: problem with run a file jar in docker

2 Answers2