diff --git a/Dockerfile b/Dockerfile
index 162f6a521063a2347cd8cf4ade8197d05b059dd6..ce53096cda9ed1f9e47249960cd603cf39077398 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,6 +11,11 @@ ENV DEBIAN_FRONTEND noninteractive
 ENV DEBIAN_PRIORITY critical
 ENV DEBCONF_NOWARNINGS yes
 
+# Upgrade packages
+RUN \
+  apt-get -y update && \
+  apt-get -y upgrade
+
 # Set Timezone
 RUN \
   echo "Europe/Stockholm" > /etc/timezone && \
@@ -47,9 +52,8 @@ ENV JIRA_HOME /home/jira
 # Add startup script
 ADD init.sh /init.sh
 
+# Expose ports
+EXPOSE 25 3306 8080 8081
+
 # Start JIRA
-EXPOSE 25
-EXPOSE 3306
-EXPOSE 8080
-EXPOSE 8081
 CMD ["sh", "/init.sh"]