I think it works. Tested the containers and worked on my computer. Disk usage seems to be too high. May need improvements. Don't know if this is enough to do the challenge/activity.

Prerequisite Checklist

• Read the contribution guidelines regarding submitting new changes to the project;
• Tested your changes against relevant architectures and platforms;
• Updated relevant documentation (if needed).

Description of changes

Added a Dockerfile that creates the environment to build and run the executable.
Added a Makefile to handle the Dockerfile (build, run, etc.)
Added a Makefile that is uploaded to the container and builds the executable, checks for the existence of the executable and checks if the executable is operating on port 31346.

With rwslotmachine3_runtime-cnt container running, I tested the communication with the app using nc and this was the result:

nc 127.0.0.1 32000
==== www / rww ====

1. Read (1/1)
2. Write (1/1)
3. Exit
   |>2
   Input slot index: 3
   Input new slot value: 3
   Slot[3]:= 0003
   ==== www / rww ====
4. Read (unavailable)
5. Write (unavailable)
6. Exit
   |> 1
   ==== www / rww ====
7. Read (unavailable)
8. Write (unavailable)
9. Exit
   |> 3

nc 127.0.0.1 32000
==== www / rww ====

1. Read (1/1)
2. Write (1/1)
3. Exit
   |> 1
   Input slot index: 3
   Slot[3]: 0000
   ==== www / rww ====
4. Read (unavailable)
5. Write (unavailable)
6. Exit
   |> 3

32000 - local port linked with container port 31346.