Or in the Configure method in your Startup.cs file you could do something like this and alter the header for CSP. This is a different example but you should get the idea:

cs
        app.UseWhen(
            context => !context.Request.Path.StartsWithSegments("/umbraco")
            && !context.Request.Path.StartsWithSegments("/media"),
            appBuilder => appBuilder.UseStaticFiles(new StaticFileOptions
            {
                OnPrepareResponse = ctx =>
                {
                    var cacheMaxAgeThirtyDays = (60 * 60 * 24 * 30).ToString();
                    ctx.Context.Response.Headers[HeaderNames.CacheControl] =
                        "public, max-age=" + cacheMaxAgeThirtyDays;
                }
            })
        );

Hi @CodeSharePaul - Can I ask - is there a Content Resolver for the Umbraco 12 CMS? There is a Media Resolver but we need a content one - so we can get content out of a UDI

So you have a UDI and you want to get the content item from it. Is that right?

In Angular JS

A bit like - {{mediaItem = (block.data.image[0].mediaKey | mediaItemResolver); ""}} But for content instead

You could look at the code for the mediaItemResolver filter and create your own contentItemResolver filter