Traefik 20H2

Docker-compose

services:
   traefik:
     image: traefik:v${TRAEFIK_VERSION}-nanoserver-${NANOSERVER_VERSION}
     build:
       context: .
       args:
         NANOSERVER_VERSION: ${NANOSERVER_VERSION}
         TRAEFIK_VERSION: '${TRAEFIK_VERSION}'
     ...

Dockerfile

 ARG NANOSERVER_VERSION
 
 FROM mcr.microsoft.com/windows/servercore:${NANOSERVER_VERSION} as ServerCore
 FROM mcr.microsoft.com/windows/nanoserver:${NANOSERVER_VERSION}
 
 ARG TRAEFIK_VERSION=$TRAEFIK_VERSION
 
 ENV traefik_zip="https://github.com/containous/traefik/releases/download/v${TRAEFIK_VERSION}/traefik_v${TRAEFIK_VERSION}_windows_amd64.zip"
 
 WORKDIR C:/
 
 RUN mkdir downloads
 
 ADD ${traefik_zip} ./downloads/traefik.zip
 
 RUN mkdir traefik
 
 RUN tar -xf ./downloads/traefik.zip -C ./traefik
 
 COPY --from=ServerCore /windows/system32/netapi32.dll /windows/system32/netapi32.dll
 
 ENTRYPOINT ["C:\\traefik\\traefik.exe"]