chore: import upstream snapshot with attribution

deployment/docker-compose.yaml

@@ -0,0 +1,87 @@
+name: docsgpt-oss
+services:
+  frontend:
+    build: ../frontend
+    volumes:
+      - ../frontend/src:/app/src
+    environment:
+      - VITE_API_HOST=http://localhost:7091
+      - VITE_API_STREAMING=$VITE_API_STREAMING
+      - VITE_GOOGLE_CLIENT_ID=$VITE_GOOGLE_CLIENT_ID
+    ports:
+      - "5173:5173"
+    depends_on:
+      - backend
+
+  backend:
+    user: root
+    build: ../application
+    env_file:
+      - ../.env
+    environment:
+      # Override URLs to use docker service names
+      - CELERY_BROKER_URL=redis://redis:6379/0
+      - CELERY_RESULT_BACKEND=redis://redis:6379/1
+      - CACHE_REDIS_URL=redis://redis:6379/2
+      - POSTGRES_URI=postgresql://docsgpt:docsgpt@postgres:5432/docsgpt
+    ports:
+      - "7091:7091"
+    volumes:
+      - ../application/indexes:/app/indexes
+      - ../application/inputs:/app/inputs
+      - ../application/vectors:/app/vectors
+    depends_on:
+      redis:
+        condition: service_started
+      postgres:
+        condition: service_healthy
+
+  worker:
+    user: root
+    build: ../application
+    # Consumes the default queue AND the dedicated `parsing` queue (read_document /
+    # parse_document). Without `parsing` here the read_document await never resolves.
+    # For heavy/OCR parsing run a separate worker with `-Q parsing`.
+    command: celery -A application.app.celery worker -l INFO -B -Q docsgpt,parsing
+    env_file:
+      - ../.env
+    environment:
+      # Override URLs to use docker service names
+      - CELERY_BROKER_URL=redis://redis:6379/0
+      - CELERY_RESULT_BACKEND=redis://redis:6379/1
+      - API_URL=http://backend:7091
+      - CACHE_REDIS_URL=redis://redis:6379/2
+      - POSTGRES_URI=postgresql://docsgpt:docsgpt@postgres:5432/docsgpt
+    volumes:
+      - ../application/indexes:/app/indexes
+      - ../application/inputs:/app/inputs
+      - ../application/vectors:/app/vectors
+    depends_on:
+      redis:
+        condition: service_started
+      postgres:
+        condition: service_healthy
+
+  redis:
+    image: redis:6-alpine
+    ports:
+      - 6379:6379
+
+  postgres:
+    image: postgres:16-alpine
+    environment:
+      - POSTGRES_USER=docsgpt
+      - POSTGRES_PASSWORD=docsgpt
+      - POSTGRES_DB=docsgpt
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U docsgpt -d docsgpt"]
+      interval: 5s
+      timeout: 5s
+      retries: 10
+
+volumes:
+  postgres_data: