diff --git a/Dockerfile b/Dockerfile
index 678e58e..a631b70 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,13 +3,18 @@ LABEL maintainer "Fco. Javier Delgado del Hoyo <frandelhoyo@gmail.com>"
 
 COPY ["run.sh", "backup.sh", "restore.sh", "/"]
 
-RUN apk add --update bash mysql-client gzip && rm -rf /var/cache/apk/* && mkdir /backup &&\
+RUN apk add --update bash mysql-client gzip openssl && rm -rf /var/cache/apk/* && mkdir /backup &&\
   chmod u+x /backup.sh /restore.sh
 
+ENV DOCKERIZE_VERSION v0.6.1
+RUN wget https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
+    && tar -C /usr/local/bin -xzvf dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
+    && rm dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz
+
 ENV CRON_TIME="0 3 * * sun" \
     MYSQL_HOST="mysql" \
     MYSQL_PORT="3306"
 
 VOLUME ["/backup"]
 
-CMD ["/run.sh"]
+CMD dockerize -wait tcp://${MYSQL_HOST}:3306 /run.sh