Day 1 · Step 1 — Create up-api
dotnet new webapi -n up-api
Default template only — no packages, no dotnet run. Verify/add to Program.cs:
builder.Services.AddControllers();
builder.Services.AddCors(options =>
{
options.AddDefaultPolicy(policy =>
{
policy.AllowAnyOrigin()
.AllowAnyMethod()
.AllowAnyHeader();
});
});
var app = builder.Build();
app.UseCors();
app.MapControllers();