FROM gradle:7-jdk11 AS build COPY --chown=gradle:gradle . /home/gradle/src WORKDIR /home/gradle/src RUN gradle buildFatJar --no-daemon FROM openjdk:11 EXPOSE 8080:8080 RUN mkdir /app COPY --from=build /home/gradle/src/build/libs/*.jar /app/ktor-docker-sample.jar ENTRYPOINT ["java","-jar","/app/ktor-docker-sample.jar"]