'Docker jar not found

My docker file looks like this:

FROM openjdk:9
VOLUME /tmp
ADD target/myjar-1.0-SNAPSHOT.jar app.jar
ENTRYPOINT [“java”,”-jar”,”/app.jar”]

When I run docker build -t myjar it builds fine.

When I run docker run image I get this error:

/bin/sh: 1: [“java”,”-jar”,”/app.jar”]: not found

I heard this could be a "relative path" issue? I'm not sure how to fix it or where the jar should even reside. I need help debugging this.

javadocker


Solution 1:[1]

Ensure that you ADD your jar at the root using:

ADD target/myjar-1.0-SNAPSHOT.jar /app.jar

Additionally, if you don't override the command when you start your image, use CMD (documentation) instead of ENTRYPOINT (and also try to use more "normal" quotes instead of ”):

CMD ["java", "-jar", "/app.jar"]

EDIT:

Are you sure you're using double quotes ?

EDIT 2:

Try without brackets:

CMD java -jar /app.jar

Solution 2:[2]

Please do remember, docker container internal is a Linux (or similar kind of) environment. While we are running the below command on windows command prompt(C:/>) it is missing bash shell

docker container commit --change='CMD ["java","-jar","/tmp/hello-world-rest-api.jar"]' boring_archimedes advanceinfo/hello-world-rest-api:manual2

So, we are getting below error

/bin/sh: [java,-jar,/tmp/hello-world-rest-api.jar]: not found

Please use one command prompt in windows which support bash shell example Git Bash prompt($) Note: don't change the above command, only change the command prompt, it will work 1000%

Solution 3:[3]

You can change the ADD instruction to an absolute path:

ADD target/myjar-1.0-SNAPSHOT.jar /app.jar

Solution 4:[4]

I Have solved this using the following command:

CMD exec java -jar "$FINALNAME"

More detail here

Solution 5:[5]

This Error occurs only in Windows 10 . Use below command

$> docker container commit --change='CMD java -jar /tmp/app-name.jar' <container_name> <docker_registry>/app-name:

Solution 6:[6]

I was getting below error : docker : /bin/sh: [java,-jar,/tmp/hello-world-rest-api.jar]: not found Below commit resolved my issue in windows 10 : docker container commit --change='CMD java -jar /tmp/hello-world-rest- api.jar' kind_hermann in28min/hello-world-rest-api:singraul-3 For Linux machine : docker container commit --change='CMD ["java","-jar","/tmp/hello-world-rest- api.jar"]' kind_hermann in28min/hello-world-rest-api:singraul-2

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1
Solution 2 Swadhin Lenka
Solution 3 yamenk
Solution 4 Ganesh Giri
Solution 5 vinod kumar
Solution 6 Devendra Singraul

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