Trouble running in a docker windows container

[Seikilos]

I've seen your docker file but it was using core 2.1 while your projects are on 3.1 already so it seems out of date.

Beside this I wrote a small docker file for running it in dockers windows mode

FROM mcr.microsoft.com/windows/servercore:ltsc2019
LABEL Description="Papercut SMTP"
RUN powershell -Command \
	$ErrorActionPreference = 'Stop'; \
	[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
	Invoke-WebRequest -Method Get -Uri https://github.com/ChangemakerStudios/Papercut-SMTP/releases/download/5.7.0/PapercutService.5.7.0.zip -OutFile c:\papercut.zip ; \
	Expand-Archive -Path c:\papercut.zip -DestinationPath c:\papercut ; \
	Remove-Item c:\papercut.zip -Force

ADD Papercut.Service.Settings.json /papercut 

EXPOSE 25 37408

CMD /papercut/Papercut.Service.exe

When I run it via docker run -d -p 25:25/tcp -p 37408:37408/tcp --name papercut papercut the container starts and the output says everything is fine, web ui is listening to localhost:37408 but accessing it from my host via http://localhost:37408 always times out, same for http://127.0.0.1:37408

I suspect that the Papercut.Service.Settings.json I use is wrong but I tried HttpBaseAddress to be localhost and 127.0.0.1 without luck. Also IP is set to Any or 0.0.0.0 but it seems to be impossible to connect to this container.

Is this a bug like the listener is not pointing to all interfaces or something similar? A hint would be appreciated 👍 😄

Edit: After I changed the HttpBaseAddress to http://localhost. Accessing the address immediately brings a

Forbidden URL

HTTP Error 403. The request URL is forbidden.

Now I don't actually know what forbidden is in this context? Google might point to SSL issues, but I am not using SSL here. Is there a log or something for this? The standard log file in "Logs" does not contain anything helpful

[Jaben]

Did you try binding to 0.0.0.0 instead of localhost?

[Seikilos]

@Jaben could you explain which configuration to set to 0.0.0.0? HttpBaseAddress cannot be set to http://0.0.0.0 since papercut fails to bind in this case. IP is set to Any but as I mentioned I already tried setting it to 0.0.0.0, same effect (also Any==0.0.0.0, AFAIK)
I am quite sure that I am missing something here :)

[Jaben]

Pretty sure PR #202 (just merged) fixes this issue.