This project demonstrates a Windows Service hosting a WCF Service. You could argue this is more of a Windows Service example than a WCF example, but it still demonstrates a common pattern for operationalizing WCF.
Creates a user for the Windows Service to run under and installs the Service with installutil.exe.
FROM mcr.microsoft.com/dotnet/framework/runtime:4.7.2 AS runtime
SHELL [ "powershell" ]
WORKDIR /app
COPY SelfHostedWCFService/SelfHostedWCFService/. .
# Windows services need to run as some kind of user so we'll create one. This is just a legacy artifact
# of how Windows Services work and the identity of this user isn't important to us so the creds aren't
# perticularly sensitive. I'm not even sure it makes sense to dial back the group the user is being put
# in to.
RUN New-LocalUser -Name "pksuser" -Password (ConvertTo-SecureString -AsPlainText "Pk$w0rd189PVTL!" -Force) \
-FullName "PKS.User" -Description "LocalAdministrator"
RUN Add-LocalGroupMember -Group administrators -Member pksuser -Verbose
# Install the service into Windows
WORKDIR /app/bin/Release .
RUN C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe /username=.\pksuser /password=Pk$w0rd189PVTL! \
/LogToConsole=true .\SelfHostedWCFService.exe
EXPOSE 8080
# The real business of the app lifecycle is managed by Windows due to this app being a Service so there isnt'
# really a need for us to worry about it in Docker. However, we do need some process to run that docker can
# watch so it knows we're still alive. This command let's Windows manage that lifecycle while we just watch
# the state of the service, exiting if the process dissapears thus destroying the container.
# I'm open to better ideas.
CMD ["powershell", "while", \
"((Get-Process | ? { $_.ProcessName -like 'SelfHostedWCFService'} | Measure).Count -gt 0)", \
"{Start-Sleep -Seconds 1}"]
---
apiVersion: v1
kind: Deployment
metadata:
labels:
app: windowsservicewcf
name: windowsservicewcf
spec:
replicas: 1
template:
metadata:
labels:
app: windowsservicewcf
name: windowsservicewcf
spec:
containers:
- name: webapp
image: <DOCKER_CONTAINER_REPO/DOCKER_CONTAINER_IMAGE:tag here>
ports:
- containerPort: 8080
tolerations:
- key: "windows"
operator: "Exists"
effect: "NoSchedule"
nodeSelector:
beta.kubernetes.io/os: windows
---
apiVersion: v1
kind: Service
metadata:
name: windowsservicewcf
labels:
app: windowsservicewcf
spec:
ports:
- port: 80
targetPort: 8080
selector:
app: windowsservicewcf
type: NodePort