Add concourse pipeline for Windows

Closes gh-15553

spring-boot-samples/spring-boot-sample-jetty-jsp/src/test/java/sample/jetty/jsp/SampleWebJspApplicationTests.java

@@ -16,6 +16,7 @@
 
 package sample.jetty.jsp;
 
+import org.eclipse.jetty.server.handler.ContextHandler;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -23,6 +24,9 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
 import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.boot.web.embedded.jetty.JettyServerCustomizer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.test.context.junit4.SpringRunner;
@@ -35,7 +39,8 @@ import static org.assertj.core.api.Assertions.assertThat;
  * @author Phillip Webb
  */
 @RunWith(SpringRunner.class)
-@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT,
+		classes = { SampleWebJspApplicationTests.JettyCustomizerConfig.class, SampleJettyJspApplication.class })
 public class SampleWebJspApplicationTests {
 
 	@Autowired
@@ -48,4 +53,19 @@ public class SampleWebJspApplicationTests {
 		assertThat(entity.getBody()).contains("/resources/text.txt");
 	}
 
+	@Configuration
+	static class JettyCustomizerConfig {
+
+		// To allow aliased resources on Concourse Windows CI (See gh-15553) to be served
+		// as static resources.
+		@Bean
+		public JettyServerCustomizer jettyServerCustomizer() {
+			return (server) -> {
+				ContextHandler handler = (ContextHandler) server.getHandler();
+				handler.addAliasCheck(new ContextHandler.ApproveAliases());
+			};
+		}
+
+	}
+
 }