'Does copying the main file output by native-image is the correct way to make native image in GraalVM?

My goal is to create native-image. I intend to create a native image of a "class Main that has 1 dependency of a class on different file". The idea is:

  1. Main.java import class HelloWorld.

What nd did:

  1. I run this
java Main.java // output: Main.class and HelloWorld.class
native-image Main // output: main and main.build_artifacts.txt
cp main /app // copy main to /app folder
./main

It works, but I am not sure whether this is correct. I use Docker for this.

Dockerfile

FROM ghcr.io/graalvm/native-image:java11-21.2
WORKDIR /app
COPY ./src/main/java/ /app
RUN javac Main.java
RUN native-image Main

FROM ghcr.io/graalvm/jdk:java11-21.2
WORKDIR /app
COPY --from=0 /app/main /app/main
CMD ./main
javagraalvmgraalvm-native-image


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