Docker Swarm issues on one node

Interesting that it comes up twice in a day. @bluepuma77 already answered it, and the other was about compose, but that doesn’t matter so I leave it here. So you have to implement the waiting and reconnecting or just let the container restart unti it an finally connect.

Regarding the first question

That is not really what stateless is.The hardware is not the state of the application, handled data is.
Everything is hardware dependent by the way. The question is just how much, but you will not run an amd64 application on an arm cpu without emulation.

I could return that exit code any time in a shell script, so that depends on what application you run, but it looks like it is usually a CPU compatibility issue which you already know as you tried different CPU settings for the Proxmox VMs. It is still something we solve without knowing the application, and even then there is no guarantee we will have an idea. Maybe you can contact the developers of the application or a community that supports it and ask what CPU requirements it has.

On the other hand, the fact that the container is not scheduled automatically on that node, could mean that even Docker can tell you that wouldn’t work. So I would check the difference between the architecture of the VMs and any other hardware difference.