added folder structure

DockerFile

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+# Use official .NET SDK image to build the project
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+WORKDIR /app
+
+# Copy project files and restore dependencies
+COPY . ./
+RUN dotnet restore
+
+# Build the application
+RUN dotnet publish -c Release -o /out --no-restore
+
+# Use a smaller runtime image for final container
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS runtime
+WORKDIR /app
+
+# Copy built files from build stage
+COPY --from=build /out .
+
+# Expose the port
+EXPOSE 5000
+EXPOSE 5001
+
+# Start the application
+ENTRYPOINT ["dotnet", "UserApi.dll"]

program.cs

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+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Configure the database
+builder.Services.AddDbContext<AppDbContext>(options =>
+    options.UseSqlite("Data Source=users.db"));
+
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen();
+
+var app = builder.Build();
+
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI();
+}
+
+app.UseHttpsRedirection();
+
+// Seed the database
+using (var scope = app.Services.CreateScope())
+{
+    var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
+    db.Database.Migrate();
+    if (!db.Users.Any())
+    {
+        db.Users.AddRange(new User { Name = "Alice" }, new User { Name = "Bob" });
+        db.SaveChanges();
+    }
+}
+
+// Define API endpoints
+app.MapGet("/users", async (AppDbContext db) =>
+    await db.Users.ToListAsync());
+
+app.Run();
+
+// Database context
+class AppDbContext : DbContext
+{
+    public AppDbContext(DbContextOptions<AppDbContext> options) : base(options) { }
+    public DbSet<User> Users => Set<User>();
+}
+
+// User model
+class User
+{
+    public int Id { get; set; }
+    public string Name { get; set; }
+}