diff --git a/Dockerfile b/Dockerfile
index 19d4291..566dc54 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
-FROM alpine
-MAINTAINER Fco. Javier Delgado del Hoyo <frandelhoyo@gmail.com>
+FROM alpine:3.5
+LABEL maintainer "Fco. Javier Delgado del Hoyo <frandelhoyo@gmail.com>"
 
 RUN apk add --update bash mysql-client gzip && rm -rf /var/cache/apk/* && mkdir /backup
 
@@ -7,10 +7,8 @@ ENV CRON_TIME="0 3 * * sun" \
     MYSQL_HOST="mysql" \
     MYSQL_PORT="3306"
 
-COPY run.sh /run.sh
-COPY backup.sh /backup.sh
-COPY restore.sh /restore.sh
-RUN chmod +x /backup.sh /restore.sh
+COPY ["run.sh", "backup.sh", "restore.sh", "/"]
+RUN chmod u+x /backup.sh /restore.sh
 
 VOLUME ["/backup"]