I have a system on Caché, which has about 100TB of data in it, with a couple of thousands of concurrent users. And it's ECM system, which in fact has no developers support for some time, but still able to be modified, as it's kind of low-code system, where all the forms can be configured with UI, all the processes and document's conventions as well, and it has integrations with many other systems. So, probably it can be proof that InterSystems is good enough for such cases.

The issue could be also, if you using some different user, set with USER line in Dockerfile, or with user parameter when you run it. The user running the IRIS inside the container should be irisowner.

There is was a change in users, and before starting a new container with durable %SYS, you have to change permissions. Look at the documentation

The driver may work much faster when works locally, it uses shared memory for communication 

I've tested with a simple telnet client installed inside the container, and it works well.

activate Foreground in Production, and in the terminal, use the command

telnet localhost 63300

I working on macOS, and with docker. When I activate foreground, browser tries to execute telnet with this port. Did you try to expose port to the same one on the host, 63300:63300?

https://github.com/intersystems-community/iris-driver-distribution

Still the same, only offline mode will save it only locally and will not save on server.

Why you don't want to update the server?

Yeah, this is why you need to store files locally. And it's right.

But does not say why you need to work offline, how do you check if your code is working as expected?

So, it will be like offline mode, not just local mode. In this case, you may just deactivate the connection, with "objectscript.conn.active": false.

But, many features, which require an active connection to the server will not be available as well.

Just curious, what are the reasons to work this way?

btw, if you would need to call other method which is also Python

Class User.Test
{

ClassMethod SomeMethod() As %String
{
  quit "test objectscript"
}

ClassMethod SomePythonMethod() As %String [ Language = python ]
{
  return "test python"
}

ClassMethod PTest() [ Language = python ]
{
  import iris
  print(iris.cls(__name__).SomeMethod())
  print(Test.SomePythonMethod())
}

}

In this case this method appears can be accessible through the python class named as the current class (without package), in my case it's Test

This version is just outdated, InterSystems deletes old version, when they publish something newer. Use docker-ls tool, this will help to find all available versions 

Right, it should help with big response

I don't use Windows, but can say how it supposed to be

VSCode supports PowerShell terminal or cmd.exe, in case if you use wsl2, it can bee configured to open it as well.

But, there is a way, to open the terminal just in cmd.exe or from PowerShell, first you have to figure it out how to get it from there. iris.exe should have options, to run it inside the current terminal, I don't know if Windows version already has irissession, you could try it.