Add the Dockerfile and Makefile to run the server.

Makefile

@@ -0,0 +1,13 @@
+default: war build_image show
+
+war:
+	./mvnw clean install -DskipTests=true
+
+test:
+	./mvnw clean test
+
+build_image:
+	podman build -t spring-rest-example .
+
+show:
+	podman run -p 8080:8080 spring-rest-example