Limit java heap to 1200MB

Author: meier-rene

Dockerfile

@@ -1,4 +1,4 @@
 FROM eclipse-temurin:21
 ARG JAR_FILE=target/massbank-export-api-*.jar
 COPY ${JAR_FILE} app.jar
-ENTRYPOINT ["java","-jar","/app.jar"]
+ENTRYPOINT ["java", "-Xmx1200m", "-jar","/app.jar"]