Working through the README.md I get

[davehodg]

On a Mac docker desktop system:

% kubectl create namespace vote
namespace/vote created
% kubectl create -f k8s-specifications/
deployment.apps/db created
service/db created
deployment.apps/redis created
service/redis created
deployment.apps/result created
service/result created
deployment.apps/vote created
service/vote created
deployment.apps/worker created
Error from server (AlreadyExists): error when creating "k8s-specifications/vote-namespace.yml": namespaces "vote" already exists

The connection reset on port 31000. Then again, in docker, I appear to have:

CONTAINER ID   IMAGE                                   COMMAND                  CREATED          STATUS         PORTS                                                                                  NAMES
0b8d4717cb50   dockersamples/examplevotingapp_worker   "/bin/sh -c 'dotnet …"   10 seconds ago   Up 9 seconds                                                                                          k8s_worker_worker-7cbf9df499-bhkbk_vote_53a6851e-b921-4ac9-9670-139ce912130c_0
298b5ea51118   dockersamples/examplevotingapp_vote     "gunicorn app:app -b…"   2 minutes ago    Up 2 minutes                                                                                          k8s_vote_vote-6d4876585f-jhclt_vote_c3e65758-4235-46dc-a70b-850381686b75_0
ce0568ad2630   dockersamples/examplevotingapp_result   "node server.js"         2 minutes ago    Up 2 minutes                                                                                          k8s_result_result-86d8966d87-q6qj7_vote_7919591b-6315-48cb-95bc-12997720e468_0
496153f0fbd5   postgres                                "docker-entrypoint.s…"   2 minutes ago    Up 2 minutes                                                                                          k8s_postgres_db-684b9b49fd-qr4kx_vote_3611e5eb-8310-4f99-98b6-6790a93c9f8a_0
3233e2adf018   redis                                   "docker-entrypoint.s…"   3 minutes ago    Up 3 minutes                                                                                          k8s_redis_redis-67db9bd79b-pjvmn_vote_37838e89-daf6-4321-aee8-224a32d550df_0