Docker compose example (#9679)

* Adds working docker-compose example

* Adds timezone to docker-compose example

README.md

@@ -149,6 +149,24 @@ To simplify, it is recommended to configure the workspace folder path to be cons
 docker run -d -v /siyuan/workspace:/siyuan/workspace -p 6806:6806 -u 1000:1000 b3log/siyuan --workspace=/siyuan/workspace/ --accessAuthCode=xxx
 ```
 
+Alternatively, see below for an example docker-compose file:
+```
+version: "3.9"
+services:
+  main:
+    image: b3log/siyuan
+    command: ['--workspace=/siyuan/workspace/','--accessAuthCode=${AuthCode}']
+    user: '1000:1000'
+    ports:
+      - 6806:6806
+    volumes:
+      - /siyuan/workspace:/siyuan/workspace
+    restart: unless-stopped
+    environment:
+      # A list of time zone identifiers can be found at https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
+      - TZ=${TimeZone}
+```
+
 #### User permissions
 
 In the image, the normal user `siyuan` (uid 1000/gid 1000) created by default is used to start the kernel process. Therefore, when the host creates a workspace folder, please pay attention to setting the user group of the folder:  `chown -R 1000:1000 /siyuan/workspace`. The parameter `-u 1000:1000` is required when starting the container.