adding a memory usage limit for every dockers

[emecdelam]

adding memory limit ot 512 mb, number of cpus to 1, max 4 processes, no mount, kill or usermod etc and no internet connection

all in the docker processbuilder

        ProcessBuilder processBuilder = new ProcessBuilder(
            "docker", "run", "--rm",
            "-v", "/tmp/logs:/usr/src/app/logs",
            "--name", dockerName,
            "--memory", "512m",           // 512 Mo
            "--cpus", "1",                // 1 cpu
            "--pids-limit", "4",          // max 4 processes
            "--cap-drop=ALL",             // no more linux cmd like mount
            "--network", "none",          // no network
            targetDocker,
            code
        );