Update Dockerfile

Author: StuartFerguson

Dockerfile

@@ -1,5 +1,5 @@
 # escape=`
-FROM mcr.microsoft.com/windows/servercore:1903 AS downloader
+FROM mcr.microsoft.com/windows/servercore:ltsc2019 AS downloader
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
 
@@ -37,4 +37,4 @@ COPY eventstore.conf .\Config\
 
 # Run Service
 SHELL ["cmd", "/S", "/C"]
-CMD "C:\eventstore\EventStore.ClusterNode.exe --db /Data --log /Logs --config=C:\eventstore\Config\eventstore.conf"
+CMD "C:\eventstore\EventStore.ClusterNode.exe --db /Data --log /Logs --config=C:\eventstore\Config\eventstore.conf"