publish docker

README.md

@@ -6,7 +6,28 @@ Go to [release](https://git.saveweb.org/saveweb/cnblogs/releases) page, downlaod
 
 WARNING: DO NOT run `cnblogs_posts_list` concurrently (on same IP), you may be banned by cnblogs.
 
-NOTE: We will publish a docker image soon™ (<30 minutes).
+### Docker
+
+```bash
+export ARCHIVIST=<your_node_name> # a string that can uniquely identify your node (for example: bob-gcloud-514). (Legal characters: letters, numbers, -, _)
+```
+
+```bash
+if [[ -z "$ARCHIVIST" ]]; then
+    echo "WARN: ARCHIVIST must be set"
+    exit 1
+fi
+_image="icecodexi/saveweb:cnblogs"
+docker pull "${_image}" \
+    && docker stop cnblogs
+docker rm -f cnblogs \
+    && docker run --env ARCHIVIST="$ARCHIVIST" --restart always \
+        --volume /etc/localtime:/etc/localtime:ro \
+        --cpu-shares 512 --memory 512M --memory-swap 512M \
+        --detach  --name cnblogs \
+        "${_image}"
+```
+
 
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