We're attempting to run umbraco on docker in swarm mode and deploy several replicas to host the back office.

here's a copy of our docker-compose.yml file

version: '3.2'

networks:
  net:
    driver: overlay
    attachable: true


services:
  umbraco:
    networks:
      - net
    image: mcr.microsoft.com/dotnet/sdk:5.0
    deploy:
      mode: replicated
      replicas: 2 
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 3
        window: 120s
    volumes:
      - type: bind
        source: /opt/umbraco
        target: /opt/umbraco
    ports:
      - '61714:61714'
    working_dir: /opt/umbraco/publish/
    command:
      - /bin/bash
      - -c
      - 'dotnet headless9.dll'

before creating the docker service, I ran dotnet publish -c Release -o publish

then I copied the publish folder and placed it in /opt/umbraco/publish

finally, I ran the docker-compose file using docker stack

docker stack deploy -c umbraco.yml my_namespace

3 things to note:

1. all containers use the shared volume /opt/umbraco which contains all the code, the data folders, the logs ... everything.
2. when i try to log in, i noticed that the first container process my login, then i get kicked out as if the second container didn't notice that i am logged in and as if my session does not persist between containers.
3. the containers start but the CPU and memory consumption is insanely high and stays like that for some time ( check below )

does anyone know why this happens and what i can do to solve the problem ?

top - 06:54:52 up 2 days, 19:43,  1 user,  load average: 5.34, 4.04, 2.81
Tasks: 198 total,   1 running, 197 sleeping,   0 stopped,   0 zombie
%Cpu(s): 34.4 us,  0.7 sy,  0.0 ni, 59.9 id,  5.0 wa,  0.0 hi,  0.0 si,  0.0 st
MiB Mem :  32108.2 total,  15229.0 free,  16464.5 used,    414.8 buff/cache
MiB Swap:      0.0 total,      0.0 free,      0.0 used.  15250.5 avail Mem 

PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                                                                                                       


236326 root      20   0   26.2g  15.2g  29184 S 277.7  48.3   6:54.24 dotnet