Added k8s

Demo.DockerDeployment/Client/Pages/Index.razor

 @page "/"
+@inject HttpClient Http
 
 <PageTitle>Index</PageTitle>
 
-<h1>Hello, world!</h1>
+<h1>@hello, world!</h1>
 
 Welcome to your new app.
 
 <SurveyPrompt Title="How is Blazor working for you?" />
+
+
+@code {
+    private string hello;
+
+    protected override async Task OnInitializedAsync()
+    {
+        hello = await Http.GetStringAsync("Hello");
+    }
+}
\ No newline at end of file

Demo.DockerDeployment/Server/Controllers/HelloController.cs

+using Demo.DockerDeployment.Server.Options;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Options;
+
+namespace Demo.DockerDeployment.Server.Controllers
+{
+    [ApiController]
+    [Route("[controller]")]
+    public class HelloController : ControllerBase
+    {
+        private readonly ILogger<WeatherForecastController> _logger;
+        private string _hello;
+
+        public HelloController(IOptions<HelloOptions> hello, ILogger<WeatherForecastController> logger)
+        {
+            _hello = hello?.Value?.Hello ?? "Hello!";
+            _logger = logger;
+        }
+
+        [HttpGet]
+        public string Get()
+        {
+            return _hello;
+        }
+    }
+}

Demo.DockerDeployment/Server/Options/HelloOptions.cs

+namespace Demo.DockerDeployment.Server.Options
+{
+    public class HelloOptions
+    {
+        public string Hello { get; set; }
+    }
+}

Demo.DockerDeployment/Server/Program.cs

 using Demo.DockerDeployment.Server;
+using Demo.DockerDeployment.Server.Controllers;
+using Demo.DockerDeployment.Server.Options;
 using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.SqlServer;
 
 var builder = WebApplication.CreateBuilder(args);
 
-// Add services to the container.
-
+// Add services to the DI container.
+// Default configuration priority: appsettings.json < appsettings.{environment}.json < secrets.json < environment variables
 builder.Services.AddControllersWithViews();
 builder.Services.AddRazorPages();
+// ":" is not supported in env, so "__" is used instead and it is automatically converted by dotnet.
+// export DemoDockerDeployment_Database__ConnectionString="Data Source=(localdb)\ProjectsV13;Initial Catalog=master;Integrated Security=True;"
+builder.Configuration.AddEnvironmentVariables(prefix: "DemoDockerDeployment_");
+builder.Services.Configure<HelloOptions>("Hello", builder.Configuration);
 builder.Services.AddDbContextFactory<WeatherDbContext>(options => 
-    options.UseSqlServer(@"Data Source=(localdb)\ProjectsV13;Initial Catalog=master;Integrated Security=True;"));
+    options.UseSqlServer(builder.Configuration["Database:ConnectionString"]));
 
 var app = builder.Build();
 

README.md

@@ -2,4 +2,15 @@
 
 1. Deploy database locally
     * dotnet ef database update
-2. Add CI/CD pipeline
+2. Add CI/CD pipeline
\ No newline at end of file
+    * Changes to the pre-generated Dockerfile
+3. Show Kubernetes
+    * install kubectl
+    * download cluster config yaml
+    * (optional) set default namespace
+    * add credentials for git image store
+5. Deploy web app without server ``kubectl apply -f .``
+4. Configuration
+    * Environment variables
+    * (ALTERNATIVE, not mentioned) config maps
+    * Secrets
\ No newline at end of file

k8s/deployment.yaml

+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: pv179-deployment-demo-dep
+  labels:
+    app: pv179-deployment-demo
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: pv179-deployment-demo
+  template:
+    metadata:
+      labels:
+        app: pv179-deployment-demo
+    spec:
+      securityContext:
+        runAsUser: 1000
+        runAsNonRoot: true
+      containers:
+      - name: pv179-deployment-demo
+        image: registry.gitlab.ics.muni.cz:443/lukasd/demo.dockerdeployment/app:latest
+        ports:
+        - containerPort: 8000
+        env:                                                                    
+        - name: DemoDockerDeployment_Hello                                                   
+          value: Tere
+        - name: DemoDockerDeployment_Database__ConnectionString
+          valueFrom:
+            secretKeyRef:
+              name: pv179-deployment-demo-secret
+              key: connectionString
+# SEE: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
+# kubectl create secret docker-registry regcred --docker-server=registry.gitlab.ics.muni.cz:443 --docker-username=410034@mail.muni.cz --docker-password=PASS --docker-email=410034@mail.muni.cz
+      imagePullSecrets:
+      - name: regcred
\ No newline at end of file

k8s/ingress.yaml

+apiVersion: networking.k8s.io/v1                                                
+kind: Ingress                                                                   
+metadata:                                                                       
+  name: pv179-deployment-demo-ingress                                                
+  annotations:                                                                  
+    kuberentes.io/ingress.class: "nginx"                                        
+    kubernetes.io/tls-acme: "true"                                              
+    cert-manager.io/cluster-issuer: "letsencrypt-prod"
+spec:                                                                           
+  tls:                                                                          
+    - hosts:                                                                    
+        - "pv179-deployment-demo.dyn.cloud.e-infra.cz"                                              
+      secretName: pv179-deployment-demo-dyn-clout-e-infra-cz-tls                                 
+  rules:                                                                        
+  - host: "pv179-deployment-demo.dyn.cloud.e-infra.cz"                                          
+    http:                                                                       
+      paths:                                                                    
+      - backend:                                                                
+          service:                                                              
+            name: pv179-deployment-demo-svc                                          
+            port:                                                               
+              number: 80
+        pathType: ImplementationSpecific
\ No newline at end of file

k8s/secret.yaml

+apiVersion: v1
+kind: Secret
+metadata:
+  name: pv179-deployment-demo-secret
+data:
+  connectionString: "Data Source=(localdb)\ProjectsV13;Initial Catalog=master;Integrated Security=True;"
\ No newline at end of file

k8s/service.yaml

+apiVersion: v1
+kind: Service
+metadata:
+  name: pv179-deployment-demo-svc
+spec:
+  type: ClusterIP
+  ports:
+  - name: pv179-deployment-demo-port                                                 
+    port: 80                                                                    
+    targetPort: 8000 
+  selector:
+    app: pv179-deployment-demo
\ No newline at end of file