ApplicationDeployer: Supply the build configuration to dotnet publish

src/Microsoft.AspNetCore.Server.Testing/Common/DeploymentParameters.cs

@@ -71,6 +71,11 @@ namespace Microsoft.AspNetCore.Server.Testing
 
         public string TargetFramework { get; set; }
 
+        /// <summary>
+        /// Configuration under which to build (ex: Release or Debug)
+        /// </summary>
+        public string Configuration { get; set; } = "Debug";
+
         /// <summary>
         /// To publish the application before deployment.
         /// </summary>

src/Microsoft.AspNetCore.Server.Testing/Deployers/ApplicationDeployer.cs

@@ -48,8 +48,9 @@ namespace Microsoft.AspNetCore.Server.Testing
             DeploymentParameters.PublishedApplicationRootPath = publishRoot ?? Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
 
             var parameters = $"publish \"{DeploymentParameters.ApplicationPath}\""
-                + $" -o \"{DeploymentParameters.PublishedApplicationRootPath}\""
-                + $" --framework {DeploymentParameters.TargetFramework}";
+                + $" --output \"{DeploymentParameters.PublishedApplicationRootPath}\""
+                + $" --framework {DeploymentParameters.TargetFramework}"
+                + $" --configuration {DeploymentParameters.Configuration}";
 
             Logger.LogInformation($"Executing command {DotnetCommandName} {parameters}");