Build swarm with TP5 (docker#13)

Signed-off-by: Stefan Scherer <scherer_stefan@icloud.com>

Author: StefanScherer

windows/swarm-windows/Dockerfile

@@ -1,12 +1,12 @@
 # build windows swarm executable image
 # adapted from https://stefanscherer.github.io/build-docker-swarm-for-windows-the-docker-way/
 
-FROM windowsservercore:10.0.10586.0
+FROM windowsservercore:10.0.14300.1000
 
 # install chocolatey pkg mgr
 RUN @powershell -NoProfile -ExecutionPolicy unrestricted -Command "(iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))) >$null 2>&1" && SET PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin
 
-ENV SWARM_VERSION v1.1.3
+ENV SWARM_VERSION v1.2.2
 ENV GOROOT C:\\tools\\go
 ENV GOPATH C:\\work
 ENV SWARM_HOST :2375
@@ -21,8 +21,6 @@ COPY . .
 # cleanup to reduce image layer size
 RUN install-and-cleanup
 
-ENTRYPOINT powershell -Command \
-    sleep 2 ; \
-    \bin\swarm.exe
+ENTRYPOINT ["\\bin\\swarm.exe"]
 
-CMD ["--help"]
+CMD ["--help"]