Usage of Command Override in Azure Container Instances within Azure Portal - azure

Question

I'm trying to deploy a Windows-based Container from a private repository within an Azure Container Instance using the Azure Portal and I'm not sure whether I use the "Command override" at the "Advanced" section properly (probably I do not). The thing is I've to pass an argument during runtime, which sets the value of a License Server, so that a specific application, which needs to establish a connection to the License Server, can start up.
In general, the run command for the container would look like:
docker run IMAGE:TAG -LicenseServer Port#Host
My entrypoint within the Dockerfile is a Powershell Script "Start.ps1", which requests the corresponding value of the mentioned License Server.
I've read the manual and therefore I've inserted following string to override and to pass the argument:
[ "cmd", "Start.ps1", "-LicenseServer", "<Port>#<Hostname>"]
After deploying the ACI, the Container gets the state "running" for a few seconds, after that, it's terminated again. According to logs, it didn't work anyway.
So I wonder, what would be the proper way to deploy the container to get it running?
Thank you a lot in advance!
In addition to my question, to get more context:
ACI was created within Azure Portal:
I've used following settings see JSON view:
{
"properties": {
"sku": "Standard",
"provisioningState": "Succeeded",
"containers": [
{
"name": "<name>",
"properties": {
"image": "<image name>",
"command": [
"powershell",
"Start.ps1",
"-LicenseServer",
"<port>#<host>"
],
"ports": [
{
"protocol": "TCP",
"port": 80
}
],
"environmentVariables": [],
"instanceView": {
"restartCount": 1,
"currentState": {
"state": "Terminated",
"finishTime": "2021-04-28T06:06:22.2263538Z",
"detailStatus": "Container stopped per client request"
},
"previousState": {
"state": "Waiting",
"detailStatus": "CrashLoopBackOff: Back-off restarting failed"
}
},
"resources": {
"requests": {
"memoryInGB": 8,
"cpu": 1
}
}
}
}
],
"initContainers": [],
"imageRegistryCredentials": [
{
"server": "<login server>",
"username": "<user>"
}
],
"restartPolicy": "OnFailure",
"ipAddress": {
"ports": [
{
"protocol": "TCP",
"port": 80
}
],
"type": "Public",
"dnsNameLabel": "mycontainerdns",
"fqdn": "mycontainerdns.westeurope.azurecontainer.io"
},
"osType": "Windows",
"instanceView": {
"events": [],
"state": "Stopped"
}
},
"id": "/subscriptions/<subscription id>",
"name": "<aci name>",
"type": "Microsoft.ContainerInstance/containerGroups",
"location": "westeurope",
"tags": {}
}

Answer 1

Actually, the cmd just tell you when you need to connect to the windows container instance, you need to use the command:
az container exec -g resource_group_name -n container_group_name --container-name container_name --exec-command "cmd"
But when you want to overwrite the CMD command, you need to pass the arguments like this:
["powershell", "Start.ps1", "-LicenseServer", "<Port>#<Hostname>"]
It means you need to execute the Powershell script in the cmd terminal.

Answer 2

I finally found the solution. The command string, provided within "Command override" was wrong.
I've tried several versions, but it now worked with following:
[ "powershell", "C:/Windows/Scripts/Start.ps1", "-LicenseServer", "<port>#<host>" ]
Now I get logs and the running state of the container within the ACI deployment.
Before, I've tried as suggested in the first answer: (among others)
["powershell", "Start.ps1", "-LicenseServer", "<Port>#<Hostname>"]
But that seems not to work within ACI, as "Start.ps1" script couldn't be found ALTHOUGH I've set the working directory within the Dockerfile and of course it works within my Rancher deployment (by just providing "-LicenseServer PortatHost").
So, as conclusion you've to provide the full path to your file when it serves as Entrypoint within the Container.
Thank you a lot anyway for your help!