Added dynu create

create/dynu-updater/Dockerfile

@@ -0,0 +1,12 @@
+FROM alpine:latest
+
+LABEL maintainer="matthias@mitscherlich.nl"
+
+RUN \
+  apk update && \
+  apk add --no-cache \
+  curl
+
+COPY entrypoint.sh /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]

create/dynu-updater/entrypoint.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+set -e
+
+DYN_HOSTNAME=${DYN_HOSTNAME:-""}
+DYN_USER=${DYN_USER:-""}
+DYN_PASS=${DYN_PASS:-""}
+WAIT_TIME=${WAIT_TIME:-"10"}
+GET_IP_SERVER=${GET_IP_SERVER:-"http://ipecho.net/plain"}
+
+while true; do
+  EXT_IP=${EXT_IP:-$(curl -s $GET_IP_SERVER)}
+  echo "public IP: $EXT_IP"
+  curl -s "https://api.dynu.com/nice/update?username=${DYN_USER}&password=${DYN_PASS}&hostname=${DYN_HOSTNAME}&myip=${EXT_IP}"
+  echo
+  sleep $WAIT_TIME
+done