Issue #55 in microsoft/openjdk-docker repo

App.java

import java.lang.management.ManagementFactory;

public class App {
    public static void main(String[] args) {
        long currentTime = System.currentTimeMillis();
        long startTime = ManagementFactory.getRuntimeMXBean().getStartTime();
        System.out.println("JVM Startup time: " + (currentTime - startTime));
    }
}

Dockerfile.distroless

FROM mcr.microsoft.com/openjdk/jdk:17-distroless
ADD App.class /
WORKDIR /
CMD ["App"]

Dockerfile.mariner

FROM mcr.microsoft.com/openjdk/jdk:17-mariner
ADD App.class /
WORKDIR /
CMD ["java", "App"]

Dockerfile.ubuntu

FROM mcr.microsoft.com/openjdk/jdk:17-ubuntu
ADD App.class /
WORKDIR /
CMD ["java", "App"]

log

$ java -version
openjdk version "17.0.5" 2022-10-18 LTS
OpenJDK Runtime Environment Microsoft-6841604 (build 17.0.5+8-LTS)
OpenJDK 64-Bit Server VM Microsoft-6841604 (build 17.0.5+8-LTS, mixed mode)

$ javac App.java
$

$ md5 App.java App.class
MD5 (App.java) = 260860c7e4ea46f2ed5b2282cfe1c722
MD5 (App.class) = c807111d3eee0e77c03896743ed059e4

$ docker version
[...]
Server: Docker Desktop 4.13.1 (90346)
[...]

$ docker run -ti mcr.microsoft.com/openjdk/jdk:17-ubuntu java -version
openjdk version "17.0.5" 2022-10-18 LTS
OpenJDK Runtime Environment Microsoft-6841604 (build 17.0.5+8-LTS)
OpenJDK 64-Bit Server VM Microsoft-6841604 (build 17.0.5+8-LTS, mixed mode, sharing)

$ docker run -ti mcr.microsoft.com/openjdk/jdk:17-distroless -version
openjdk version "17.0.5" 2022-10-18 LTS
OpenJDK Runtime Environment Microsoft-6841604 (build 17.0.5+8-LTS)
OpenJDK 64-Bit Server VM Microsoft-6841604 (build 17.0.5+8-LTS, mixed mode, sharing)

$ docker build -t test:ubuntu -f Dockerfile.ubuntu .
[...]

$ docker build -t test:distroless -f Dockerfile.distroless .
[...]

$ docker build -t test:mariner -f Dockerfile.mariner .
[...]

$ echo "17-distroless" && time docker run -ti test:distroless && echo "17-ubuntu" && time docker run -ti test:ubuntu && echo "17-mariner" && time docker run -ti test:mariner
17-distroless
JVM Startup time: 194
docker run -ti test:distroless  0.04s user 0.02s system 6% cpu 1.091 total
17-ubuntu
JVM Startup time: 159
docker run -ti test:ubuntu  0.04s user 0.02s system 5% cpu 1.070 total
17-mariner
JVM Startup time: 203
docker run -ti test:mariner  0.05s user 0.02s system 6% cpu 1.156 total