diff --git a/Dockerfile b/Dockerfile
index 28f65c5..90b1543 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM openjdk:17
+FROM amazoncorretto:21-alpine
 VOLUME /tmp
 
 ADD target/backend-0.0.1-SNAPSHOT.jar app.jar
diff --git a/pom.xml b/pom.xml
index 81e6e15..e0963f9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
         <project.build.finalName>0.0.1-SNAPSHOT</project.build.finalName>
         <jackson.version>2.15.2</jackson.version>
         <fully.qualified.main.class>org.gcnc.calculate.Application</fully.qualified.main.class>
-        <java.version>17</java.version>
+        <java.version>21</java.version>
     </properties>
 
     <build>
diff --git a/src/main/resources/application-local.yml b/src/main/resources/application-local.yml
index 02b002b..d0d019f 100644
--- a/src/main/resources/application-local.yml
+++ b/src/main/resources/application-local.yml
@@ -1,3 +1,5 @@
 properties:
   fetcher:
-    url: "http://localhost:5000"
\ No newline at end of file
+    url: "http://localhost:5000"
+server:
+  port: 8080
\ No newline at end of file
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index b41f555..3326611 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -1,6 +1,7 @@
 server:
   servlet:
     context-path: /
+  port: 8100
 logging:
   level:
     org.springframework.web: DEBUG