refine Docker

Dockerfile

@@ -1,23 +1,22 @@
-FROM alpine:edge
+FROM chenhw2/alpine:base
 MAINTAINER CHENHW2 <https://github.com/chenhw2>
 
-ARG BIN_URL=https://github.com/chenhw2/aliyun-ddns-cli/releases/download/v20170413/aliddns_linux-amd64-20170413.tar.gz
+ARG VER=20170715
+ARG URL=https://github.com/chenhw2/aliyun-ddns-cli/releases/download/v$VER/aliddns_linux-amd64-$VER.tar.gz
 
-RUN apk add --update --no-cache wget supervisor ca-certificates \
-    && update-ca-certificates \
-    && rm -rf /var/cache/apk/*
-
-RUN mkdir -p /opt \
-    && cd /opt \
-    && wget -qO- ${BIN_URL} | tar xz \
+RUN mkdir -p /usr/bin \
+    && cd /usr/bin \
+    && wget -qO- ${URL} | tar xz \
     && mv aliddns_* aliddns
 
-ENV AccessKeyID=1234567890 \
-    AccessKeySecret=abcdefghijklmn \
-    Domain=ddns.example.win \
-    Redo=0
-
-ADD Docker_entrypoint.sh /entrypoint.sh
-RUN chmod +x /entrypoint.sh
+ENV AKID=1234567890 \
+    AKSCT=abcdefghijklmn \
+    DOMAIN=ddns.example.win \
+    REDO=0
 
-ENTRYPOINT ["/entrypoint.sh"]
+CMD aliddns \
+    --id ${AKID} \
+    --secret ${AKSCT} \
+    auto-update \
+    --domain ${DOMAIN} \
+    --redo ${REDO}

README.md

@@ -12,13 +12,16 @@
 $ docker pull chenhw2/aliyun-ddns-cli
 
 $ docker run -d \
-    -e "AccessKeyID=1234567890" \
-    -e "AccessKeySecret=abcdefghijklmn" \
-    -e "AcceDomain=ddns.example.winssKeyID" \
-    -e "Redo=600" \
+    -e "AKID=[ALIYUN's AccessKey-ID]" \
+    -e "AKSCT=[ALIYUN's AccessKey-Secret]" \
+    -e "DOMAIN=ddns.aliyun.win" \
+    -e "REDO=600" \
     chenhw2/aliyun-ddns-cli
-
 ```
+
+### Example (for Synology)
+- https://github.com/chenhw2/aliyun-ddns-cli/tree/master/example
+
 ### Help
 ```
 $ docker run --rm chenhw2/aliyun-ddns-cli -h
@@ -46,8 +49,8 @@ GLOBAL OPTIONS:
    --access-key-secret value, --secret value  AliYun's Access Key Secret
    --help, -h                                 show help
    --version, -v                              print the version
-
 ```
+
 ### CLI Example:
 ```
 aliddns --id ${AccessKeyID} --secret ${AccessKeySecret} \
@@ -56,5 +59,4 @@ aliddns --id ${AccessKeyID} --secret ${AccessKeySecret} \
 aliddns --id ${AccessKeyID} --secret ${AccessKeySecret} \
     update --domain ddns.example.win \
     --ipaddr $(ifconfig pppoe-wan | sed -n '2{s/[^0-9]*://;s/[^0-9.].*//p}')
-
-```
+```