fix: use host bind mount for postgres data to prevent data loss on deploy

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -37,6 +37,17 @@ jobs:
           ADMIN_PASSWORD=${{ secrets.ADMIN_PASSWORD }}
           EOF
 
+      - name: Backup database before deploy
+        run: |
+          mkdir -p /opt/galaxis-po/backups
+          docker exec galaxis-po-db pg_dump -U ${{ secrets.DB_USER }} ${{ secrets.DB_NAME }} \
+            > /opt/galaxis-po/backups/$(date +%Y%m%d_%H%M%S).sql 2>/dev/null || true
+
+      - name: Ensure data directories exist
+        run: |
+          mkdir -p /opt/galaxis-po/postgres-data
+          mkdir -p /opt/galaxis-po/backups
+
       - name: Deploy with Docker Compose
         run: |
           docker compose --project-name galaxis-po --env-file .env.prod -f docker-compose.prod.yml down || true

docker-compose.prod.yml

@@ -10,7 +10,7 @@ services:
       POSTGRES_PASSWORD: ${DB_PASSWORD}
       POSTGRES_DB: ${DB_NAME}
     volumes:
-      - postgres_data:/var/lib/postgresql/data
+      - /opt/galaxis-po/postgres-data:/var/lib/postgresql/data
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U ${DB_USER} -d ${DB_NAME}"]
       interval: 5s
@@ -60,10 +60,6 @@ services:
     networks:
       - galaxy-net
 
-volumes:
-  postgres_data:
-    driver: local
-
 networks:
   galaxy-net:
     driver: bridge