Add dynamic background images for servers

Moonlight/App/Database/Entities/Image.cs

@@ -20,4 +20,5 @@ public class Image
     public List<DockerImage> DockerImages { get; set; } = new();
     public List<ImageVariable> Variables { get; set; } = new();
     public string TagsJson { get; set; } = "";
+    public string BackgroundImageUrl { get; set; } = "";
 }

Moonlight/App/Database/Migrations/20230609202138_AddBackgroundImageUrlImage.cs

@@ -0,0 +1,29 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Moonlight.App.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddBackgroundImageUrlImage : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "BackgroundImageUrl",
+                table: "Images",
+                type: "longtext",
+                nullable: false)
+                .Annotation("MySql:CharSet", "utf8mb4");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "BackgroundImageUrl",
+                table: "Images");
+        }
+    }
+}

Moonlight/App/Database/Migrations/DataContextModelSnapshot.cs

@@ -132,6 +132,10 @@ namespace Moonlight.App.Database.Migrations
                     b.Property<int>("Allocations")
                         .HasColumnType("int");
 
+                    b.Property<string>("BackgroundImageUrl")
+                        .IsRequired()
+                        .HasColumnType("longtext");
+
                     b.Property<string>("ConfigFiles")
                         .IsRequired()
                         .HasColumnType("longtext");