Merge pull request #31 from dlcs/fix/returnHttps

Adding headers to allow https in response

src/IIIFPresentation/API/Program.cs

@@ -2,6 +2,7 @@
 using API.Features.Storage.Validators;
 using API.Infrastructure;
 using API.Settings;
+using Microsoft.AspNetCore.HttpOverrides;
 using Newtonsoft.Json;
 using Repository;
 using Serilog;
@@ -32,6 +33,10 @@
 builder.Services.AddDataAccess(builder.Configuration);
 builder.Services.ConfigureMediatR();
 builder.Services.AddHealthChecks();
+builder.Services.Configure<ForwardedHeadersOptions>(opts =>
+{
+    opts.ForwardedHeaders = ForwardedHeaders.XForwardedHost | ForwardedHeaders.XForwardedProto;
+});
 
 builder.Services.ConfigureHttpJsonOptions( options =>
 {
@@ -43,6 +48,8 @@
 
 var app = builder.Build();
 
+app.UseForwardedHeaders();
+
 // Configure the HTTP request pipeline.
 if (app.Environment.IsDevelopment())
 {