Update Dockerfile

Dockerfile

@@ -34,8 +34,8 @@ COPY crontab /etc/cron.d/backup
 # Set Timezone
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 
-# Create /papermc and /backup directories
-RUN mkdir /papermc /backup
+# Create /papermc and /backup directories and /web for the dynmap
+RUN mkdir /papermc /backup /web
 
 #sets permission for the cronjobs
 RUN chmod 0644 /etc/cron.d/backup
@@ -79,3 +79,4 @@ EXPOSE 25565/udp
 #Specifies the datastructure in the container
 VOLUME /papermc
 VOLUME /backup
+VOLUME /web