You can wrap a Java executable (JAR/WAR) in a docker container.

Basically you need to create a Dockerfile, which has java as a part of its installations in the base image. Then you need to copy the JAR from local to the Dockerfile using COPY. Then you need to run the java CMD.

FROM openjdk:21

COPY target/demoApp-*.jar /demoApp.jar

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

Now you gotta build the image:

docker build -t giveItAName:versionNumber .

Now you gotta run it as well:

docker run -p 8080:8080 giveItAName:versionNumber

voila, it works!