转移.net core 3.1，为.NET 5做准备

OpenAuth.Identity/Views/Home/Index.cshtml

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+@{
+    var version = typeof(IdentityServer4.Hosting.IdentityServerMiddleware).Assembly.GetName().Version.ToString();
+}
+
+<div class="welcome-page">
+    <div class="row page-header">
+        <div class="col-sm-10">
+            <h1>
+                <img class="icon" src="~/icon.jpg">
+                Welcome to IdentityServer4
+                <small>(version @version)</small>
+            </h1>
+        </div>
+    </div>
+
+    <div class="row">
+        <div class="col-sm-8">
+            <p>
+                IdentityServer publishes a
+                <a href="~/.well-known/openid-configuration">discovery document</a>
+                where you can find metadata and links to all the endpoints, key material, etc.
+            </p>
+        </div>
+        <div class="col-sm-8">
+            <p>
+                Click <a href="~/grants">here</a> to manage your stored grants.
+            </p>
+        </div>
+    </div>
+    <div class="row">
+        <div class="col-sm-8">
+            <p>
+                Here are links to the
+                <a href="https://github.com/identityserver/IdentityServer4">source code repository</a>,
+                and <a href="https://github.com/IdentityServer/IdentityServer4/tree/master/samples">ready to use samples</a>.
+            </p>
+        </div>
+    </div>
+</div>