Fix initialization scripts for docker

distribution/Dockerfile

@@ -5,8 +5,11 @@
 FROM tomcat:9.0-jdk17-openjdk
 LABEL maintainer="Paulo Gustavo Veiga <pveiga@wisemapping.com>"
 
-#Build variables ...
+# Build variables ...
 ARG WEBAPP_TARGET_DIR="/usr/local/tomcat/webapps/ROOT"
+
+# Defautl ENV configurations ...
+ENV JAVA_OPTS="-XX:+PrintFlagsFinal -XX:InitialRAMPercentage=30 -XX:MaxRAMPercentage=80"
 ENV database.base.url="/var/wisemapping"
 
 # Copy wisemapping distribution ...