Makes some small changes

Dockerfile

@@ -1,4 +1,4 @@
 FROM openjdk:17
-EXPOSE 8000
+EXPOSE 8080
 ADD target/app.jar app.jar
 ENTRYPOINT ["java","-jar","app.jar"]

pom.xml

@@ -50,6 +50,7 @@
     </dependencies>
 
     <build>
+        <finalName>app</finalName>
         <plugins>
             <plugin>
                 <groupId>org.springframework.boot</groupId>

src/main/resources/application.yml

@@ -4,5 +4,5 @@ spring:
   data:
     mongodb:
       database: db_1
-      host: localhost
+      host: mongodb
       port: 27017