feat(cli): add generate docker file command and optimize it

Signed-off-by: Christoph Bühler <[email protected]>

Author: buehler

_old/src/KubeOps/Operator/Commands/Generators/DockerGenerator.cs

@@ -0,0 +1,69 @@
+using System.CommandLine;
+using System.CommandLine.Invocation;
+
+using k8s;
+using k8s.Models;
+
+using KubeOps.Abstractions.Kustomize;
+using KubeOps.Cli.Output;
+
+using Spectre.Console;
+
+namespace KubeOps.Cli.Commands.Generator;
+
+internal static class DockerGenerator
+{
+    public static Command Command
+    {
+        get
+        {
+            var cmd = new Command("docker", "Generates a dockerfile that builds and starts the operator.")
+            {
+                Options.OutputPath,
+            };
+            cmd.SetHandler(ctx => Handler(AnsiConsole.Console, ctx));
+
+            return cmd;
+        }
+    }
+
+    internal static async Task Handler(IAnsiConsole console, InvocationContext ctx)
+    {
+        var outPath = ctx.ParseResult.GetValueForOption(Options.OutputPath);
+
+        var result = new ResultOutput(console, OutputFormat.Plain);
+        console.WriteLine("Generate operator Dockerfile.");
+
+        result.Add(
+            "Dockerfile",
+            """
+            FROM mcr.microsoft.com/dotnet/sdk:latest as build
+            WORKDIR /operator
+
+            COPY ./ ./
+            RUN dotnet publish -c Release /p:AssemblyName=operator -o out
+
+            # The runner for the application
+            FROM mcr.microsoft.com/dotnet/runtime:latest as final
+
+            RUN addgroup k8s-operator && useradd -G k8s-operator operator-user
+
+            WORKDIR /operator
+            COPY --from=build /operator/out/ ./
+            RUN chown operator-user:k8s-operator -R .
+
+            USER operator-user
+
+            ENTRYPOINT [ "dotnet", "operator.dll" ]
+            """);
+
+        if (outPath is not null)
+        {
+            await result.Write(outPath);
+        }
+        else
+        {
+            result.Write();
+        }
+    }
+}

src/KubeOps.Cli/Commands/Generator/DockerGenerator.cs

@@ -13,6 +13,7 @@ public static Command Command
             {
                 CertificateGenerator.Command,
                 CrdGenerator.Command,
+                DockerGenerator.Command,
                 OperatorGenerator.Command,
                 RbacGenerator.Command,
             };

src/KubeOps.Cli/Commands/Generator/Generator.cs

@@ -21,6 +21,11 @@
       "workingDirectory": "$(ProjectDir)",
       "commandLineArgs": "g op"
     },
+    "CLI Generate Docker": {
+      "commandName": "Project",
+      "workingDirectory": "$(ProjectDir)",
+      "commandLineArgs": "g docker"
+    },
     "CLI Install": {
       "commandName": "Project",
       "workingDirectory": "$(ProjectDir)",