build: change packaging from jar to war

pom.xml

@@ -14,10 +14,12 @@
     <groupId>fr.recia</groupId>
     <artifactId>ressources-diffusables-api</artifactId>
     <version>0.0.1-SNAPSHOT</version>
+    <packaging>war</packaging>
     <name>Ressources Diffusables API</name>
     <description>API des ressources diffusables</description>
 
     <properties>
+        <check.java.version>11</check.java.version>
         <java.version>11</java.version>
     </properties>
 

src/main/java/fr/recia/ressourcesdiffusablesapi/ServletInitializer.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2021 GIP-RECIA, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *                 http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package fr.recia.ressourcesdiffusablesapi;
+
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
+
+public class ServletInitializer extends SpringBootServletInitializer {
+
+    @Override
+    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
+        return application.sources(ApiMediacentreApplication.class);
+    }
+
+}