Getting this error when running ASP.NET Core in Windows docker container...

Unhandled Exception: System.InvalidOperationException: Unable to configure HTTPS endpoint. No server certificate was specified, and the default developer certificate could not be found.

I was able to get this to work...

RUN dotnet dev-certs https

But I want to install an actual certificate...for now a self-sign certificate but later a real one.

So based on a blog post titled "Import and bind an SSL cert in a Windows container using Powershell", I created the following PS script to run in the container build...

Import-PfxCertificate -FilePath C:\Certificates\xxx.pfx -Password (ConvertTo-SecureString -String "xxxx" -AsPlainText -Force) `
-CertStoreLocation "Cert:\LocalMachine\My"

$cert = (Get-ChildItem -Path cert:\LocalMachine\My -DNSName "xxx.mydomain.com")[0]

$thumb =  ($cert | Select-Object Thumbprint)."Thumbprint"
$guid = [guid]::NewGuid().ToString("B")

netsh http add sslcert ipport=0.0.0.0:5001 certhash=$thumb certstorename=MY appid="$guid"

This builds fine and seems to install the certificate. But I get the exception when I try to run the container. I tried using 443 instead of 5001, same error

Here is my docker file for reference...

 escape=`
 FROM xxx/base
 EXPOSE 5000
 EXPOSE 5001
 COPY testing/ /testing
 COPY service/ /Service
 COPY certificates/ /certificates
 COPY scripts/ /scripts

 # install certificates

 RUN scripts/Install-Container-Certificate.ps1

 # configure ASP.NET Core

 ENV ASPNETCORE_URLS http://+:80;https://+:443
 EXPOSE 80
 EXPOSE 443
 # RUN dotnet dev-certs https
 # start ASP.NET Core

 ENTRYPOINT ["dotnet","/Service/xxxService.dll"]

What am I doing wrong?