Add doc directory to .dockerignore and update image paths in README.md

.dockerignore

@@ -20,7 +20,6 @@
 # debug
 npm-debug.log*
 yarn-debug.log*
-yarn-error.log*
 .pnpm-debug.log*
 
 # local env files
@@ -41,3 +40,5 @@ npm-debug.log
 README.md
 .git
 .run
+
+/doc

README.md

@@ -18,10 +18,10 @@ Vortex
 </p>
 
 <p align="center">
-    <img src="https://raw.githubusercontent.com/jarvis2f/vortex/main/public/dashboard.png" alt="Vortex Dashboard" width="70%"/>
+    <img src="https://raw.githubusercontent.com/jarvis2f/vortex/main/doc/dashboard.png" alt="Vortex Dashboard" width="90%"/>
 </p>
 <p align="center">
-    <img src="https://raw.githubusercontent.com/jarvis2f/vortex/main/public/server.png" alt="Vortex Umami" width="70%"/>
+    <img src="https://raw.githubusercontent.com/jarvis2f/vortex/main/doc/server.png" alt="Vortex Umami" width="90%"/>
 </p>
 
 # Installation
@@ -44,6 +44,16 @@ docker-compose up
 docker-compose -f docker-compose.umami.yml up
 ```
 
+### Backup and Restore PostgreSQL
+
+```bash
+docker exec -t vortex-postgres pg_dump -U postgres --data-only vortex > dump_`date +%d-%m-%Y"_"%H_%M_%S`.sql
+```
+
+```bash
+cat dump.sql | docker exec -i vortex_postgres psql -U postgres -d vortex
+```
+
 ## Vercel
 
 [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fjarvis2f%2Fvortex)