diff --git a/docker/docker/Dockerfile.windows.1903 b/docker/docker/Dockerfile.windows.1903
index 4d50542..8ee4c9e 100644
--- a/docker/docker/Dockerfile.windows.1903
+++ b/docker/docker/Dockerfile.windows.1903
@@ -13,8 +13,7 @@ RUN [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tl
     Invoke-WebRequest $('https://github.com/docker/toolbox/releases/download/v{0}/DockerToolbox-{0}.exe' -f $env:DOCKER_VERSION) -OutFile 'dockertoolbox.exe' -UseBasicParsing
 RUN /innoextract.exe dockertoolbox.exe
 
-FROM mcr.microsoft.com/windows/nanoserver:1903
-USER ContainerAdministrator
+FROM mcr.microsoft.com/windows/servercore:1903
 
 LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" `
   org.label-schema.name="Drone Docker" `