add drone build file

.drone.yml

@@ -0,0 +1,8 @@
+pipeline:
+
+  docker:
+    image: plugins/docker
+    repo: bunix42/duck-dns
+    tags:
+     - latest
+    secrets: [ docker_username, docker_password ]

Dockerfile

@@ -1,9 +1,11 @@
 FROM alpine
 
-ENV DOMAINS
-ENV TOKEN
-ENV VERBOSE=false
+MAINTAINER Hanjo Meinhardt <hanjo@bunix.de>
 
-COPY renew-dns.sh /etc/periodic/5min/renew-dns.sh
+RUN apk add -U --no-cache curl
 
-CMD sh -c '/etc/periodic/5min/renew-dns.sh && crond -f -d 8'
+COPY renew-dns.sh /etc/periodic/15min/renew-dns.sh
+
+ENV VERBOSE false
+
+CMD /etc/periodic/15min/renew-dns.sh && crond -f -d 8

renew-dns.sh

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-curl "https://www.duckdns.org/update?domains=$DOMAINS&token=$TOKEN&VERBOSE=$VERBOSE"
+curl -s "https://www.duckdns.org/update?domains=$DOMAINS&token=$TOKEN&VERBOSE=$VERBOSE"