refactor(docker): rename postgres service to avoid DNS conflicts

- Rename service from 'postgres' to 'bttoxinpostgres'
- Rename container from 'bttoxin-postgres' to 'bttoxinpostgres'
- Update DATABASE_URL references to use new container name
- Prevents DNS collision with other projects on shared frontend network

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

docker-compose.yml

@@ -6,9 +6,9 @@
 # 3. Fixes PYTHONPATH issues for Celery workers
 
 services:
-  postgres:
+  bttoxinpostgres:
     image: docker.m.daocloud.io/library/postgres:15-alpine
-    container_name: bttoxin-postgres
+    container_name: bttoxinpostgres
     restart: unless-stopped
     environment:
       # Unified credentials matching the original 'docker' project
@@ -43,13 +43,13 @@ services:
       - JOBS_DIR=/app/jobs
       - UPLOAD_DIR=/app/jobs/uploads
       - RESULTS_DIR=/app/jobs/results
-      - DATABASE_URL=postgresql://bttoxin:bttoxin_password@bttoxin-postgres:5432/bttoxin_db
+      - DATABASE_URL=postgresql://bttoxin:bttoxin_password@bttoxinpostgres:5432/bttoxin_db
       - REDIS_URL=redis://bttoxin-redis:6379/0
       - CELERY_BROKER_URL=redis://redis:6379/0
       - CELERY_RESULT_BACKEND=redis://redis:6379/0
     restart: unless-stopped
     depends_on:
-      - postgres
+      - bttoxinpostgres
       - redis
     networks:
       - frontend
@@ -89,13 +89,13 @@ services:
       - JOBS_DIR=/app/jobs
       - UPLOAD_DIR=/app/jobs/uploads
       - RESULTS_DIR=/app/jobs/results
-      - DATABASE_URL=postgresql://bttoxin:bttoxin_password@bttoxin-postgres:5432/bttoxin_db
+      - DATABASE_URL=postgresql://bttoxin:bttoxin_password@bttoxinpostgres:5432/bttoxin_db
       - REDIS_URL=redis://bttoxin-redis:6379/0
       - CELERY_BROKER_URL=redis://redis:6379/0
       - CELERY_RESULT_BACKEND=redis://redis:6379/0
     restart: unless-stopped
     depends_on:
-      - postgres
+      - bttoxinpostgres
       - redis
     networks:
       - frontend