the container image is now only pulled once, before all containers are
created. this prevents hitting the container registry with thousands of
requests in a very short amount of time.

I got to the point of needed more than 10k rows and since my biggest
latency matrix is 10k in size this option allows the values to wrap so
we can create a network bigger than the matrix.

the default value on the machines seems to be 262144 but on some larger
experiments dmesg will sometimes show the following logs:
[Fri Aug  8 05:01:42 2025] TCP: too many orphaned sockets
[Fri Aug  8 05:01:42 2025] TCP: too many orphaned sockets
[Fri Aug  8 05:01:42 2025] TCP: too many orphaned sockets
[Fri Aug  8 05:01:42 2025] TCP: too many orphaned sockets
[Fri Aug  8 05:01:42 2025] TCP: too many orphaned sockets
[Fri Aug  8 05:01:42 2025] TCP: too many orphaned sockets
[Fri Aug  8 05:01:42 2025] TCP: too many orphaned sockets
[Fri Aug  8 05:01:42 2025] TCP: too many orphaned sockets
[Fri Aug  8 05:01:42 2025] TCP: too many orphaned sockets
[Fri Aug  8 05:01:42 2025] TCP: too many orphaned sockets

hopefully increasing this limit will fix that.
https://serverfault.com/questions/624911/what-does-tcp-too-many-orphaned-sockets-mean
the second answer on server faul also says it could be due to tcp memory
limits:
```
The possible cause of this error is system run out of socket memory.Either you need to increase the socket memory(net.ipv4.tcp_mem) or find out the cause of memory consumption

        [root@test ~]# cat /proc/sys/net/ipv4/tcp_mem
         362688  483584  725376
So here in my system you can see 725376(pages)*4096=2971140096bytes/1024*1024=708 megabyte

So this 708 megabyte of memory is used by application for sending and receiving data as well as utilized by my loopback interface.If at any stage this value reached no further socket can be made until this memory is released from the application which are holding socket open which you can determine using netstat -antulp.
```
but for now I will just increase the max orphans and see if that is
enough.