feat: add docker-compose.yml for backend + frontend + meilisearch

MinIO stays out of this compose file per the design spec — it's deployed
independently, with MINIO_ENDPOINT overridable via env for wherever it
actually lives. Meilisearch uses the official image directly (no
Dockerfile needed); frontend's VITE_API_BASE_URL is left empty since
nginx.conf already proxies /api/ to the backend service.

docker-compose.yml

@@ -0,0 +1,38 @@
+services:
+  backend:
+    build: ./backend
+    environment:
+      MINIO_ENDPOINT: ${MINIO_ENDPOINT:-minio:9000}
+      MINIO_ACCESS_KEY: ${MINIO_ACCESS_KEY:-minioadmin}
+      MINIO_SECRET_KEY: ${MINIO_SECRET_KEY:-minioadmin}
+      MINIO_BUCKET: ${MINIO_BUCKET:-dochub}
+      MEILISEARCH_HOST: http://meilisearch:7700
+      MEILISEARCH_API_KEY: ${MEILISEARCH_API_KEY:-}
+      MEILISEARCH_INDEX: ${MEILISEARCH_INDEX:-documents}
+      CORS_ORIGINS: ${CORS_ORIGINS:-http://localhost:8080}
+    depends_on:
+      - meilisearch
+    restart: unless-stopped
+
+  frontend:
+    build:
+      context: ./frontend
+      args:
+        VITE_API_BASE_URL: ""
+    ports:
+      - "8080:80"
+    depends_on:
+      - backend
+    restart: unless-stopped
+
+  meilisearch:
+    image: getmeili/meilisearch:v1.10
+    environment:
+      MEILI_MASTER_KEY: ${MEILISEARCH_API_KEY:-}
+      MEILI_NO_ANALYTICS: "true"
+    volumes:
+      - meilisearch-data:/meili_data
+    restart: unless-stopped
+
+volumes:
+  meilisearch-data: