Create README.md

Signed-off-by: Zoey <[email protected]>

README.md

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+# ipv64-updater
+
+just use this compose file:
+
+```yaml
+services:
+  ipv64-updater:
+    container_name: ipv64-updater
+    image: zoeyvid/ipv64-updater
+    restart: always
+    network_mode: host                       # you can use bridge if it support IPv6
+    environment:
+      - "TZ=Europe/Berlin"                     # your timezone
+      - "DUK=r23jLIKr6IQwrlU6Wcv4ZxrJePxbd57t" # your Domain Update Token (invalid example)
+#      - "UI=5m"                               # interval to update DDNS
+#      - "IPv4=true"                           # enable/disable IPv4
+#      - "IPv6=true"                           # enable/disable IPv6
+```