有什么方法可以从 Java 程序内部检测它是否在 Docker 中运行？

Question

Title says it. I'm running a Java program, and from within the program I'd like to detect whether its running inside a Docker container or not.

Answer 1

According to https://stackoverflow.com/a/25518345/4222206

public boolean isDockerized() {
    File f = new File("/.dockerenv");
    return f.exists();
}