Java commands inside docker container

I want to open up a docker container in a java file. Below is my code. I am able to open up the docker container with list but now want to run several commands within the docker container. I have an OutputStream which should pick up the data that I give in the java program. Maybe I am incorrectly understanding how to do this. Do I need to use another process for additional commands or can I construct more commands and give them to Output stream in a Byte array? I have also tried using the Runtime class which I believe is now depricated. See related posts here, how to run a command at terminal from java program?

Execute several line commands in a Java Programm

try {
        List<String> list = new ArrayList<String>();
        list.add("sudo");
        list.add("docker");
        list.add("exec");
        list.add("-it");
        list.add("sawtooth-shell-default");
        list.add("bash");
        
        ProcessBuilder pb = new ProcessBuilder(list);
        pb.inheritIO();
        Process process = pb.start();
        process.waitFor();
        OutputStream out = process.getOutputStream();  
        byte[] byteArr= {'l','s'};
    out.write(byteArr);  
    out.flush();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

I have also tried using && between my commands but I end up with a no such file or directory exeception. I add them to list like so,

        list.add("&&");
        list.add("ls");

Note from the second link I shared that I cannot combine my command into one big string. In that situation I think I would have to add the terminal name that I am using so in this case gnome-terminal but when I run with this string,

String command = "gnome-terminal sudo docker ... etc" 

It also returns a no such file or directory error.

I have also tried putting

list.add("bash");
list.add("-c"); 

before the rest of my commands like this post suggests. Java ProcessBuilder to start execute multiple commands sequentially in Linux

Edit: I decided to change the name of this question. I realize that the problem is the additional commands are running outside of the docker contatiner. How can I run a command to bring up a docker contatiner and then inside the docker container run additional commands?