docs: add docker compose install document

website/docs/deployments/docker.md

@@ -0,0 +1,37 @@
+---
+sidebar_position: 1
+---
+
+# Deploy Tianji with Docker Compose
+
+docker compose is most fast way to deploy `tianji`
+
+You only need a few steps to complete the deployment
+
+## Steps
+
+download docker compose config:
+
+```
+wget https://raw.githubusercontent.com/msgbyte/tianji/master/docker-compose.yml
+```
+
+and change some env
+
+```
+vim docker-compose.yml
+```
+
+you should change `JWT_SECRET` to make your token safe. 
+
+and change `SERVER_URL` to make sure you can quick run `install.sh` in server status report if you have many level gateway.
+
+Then, run it!
+
+```
+docker compose up -d
+```
+
+its will start a postgresql and write init struct in database. if everything is ok, you can visit it in `http://127.0.0.1:12345`
+
+and default account is `admin`/`admin`, dont forget change password!