linuxchina/jbang-action repository overview

///usr/bin/env jbang "$0" "$@" ; exit $?

public class Hello {
    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
}

FROM linuxchina/jbang-action as builder

ARG mainClass="Hello.java"

RUN mkdir -p /opt/app/out
WORKDIR /opt/app

COPY $mainClass /opt/app

RUN jbang export portable -O out/app.jar $mainClass

FROM eclipse-temurin:17

COPY --from=builder /opt/app/out /opt/app/out

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