Move compose to repo root with context:. (fixes Coolify build-context path)

Coolify runs compose with --project-directory=repo-root, so context:.. resolved above the repo and the build context/Dockerfiles weren't found. Root compose + context:. matches the Dockerfiles' assumption (context = repo root).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,54 @@
+# Visigine — deployment compose at the REPO ROOT so build contexts resolve
+# correctly under Coolify (which runs compose with --project-directory = repo root).
+# Frontend (nginx) is the only ingress; the backend is reachable only over the
+# internal docker network. Dockerfiles live in docker/ and assume context = root.
+#
+# Secrets (MISTRAL_KEY, ADMIN_TOKEN, …) are injected from Coolify env vars.
+
+name: visigine
+
+services:
+  backend:
+    build:
+      context: .
+      dockerfile: docker/backend.Dockerfile
+    environment:
+      NODE_ENV: production
+      PORT: "3001"
+      ALLOWED_ORIGINS: "https://visigine.de"
+      ALLOW_PRIVATE_HOSTS: "0"
+      DB_PATH: "/data/visigine.db"
+      MISTRAL_KEY: ${MISTRAL_KEY}
+      ADMIN_TOKEN: ${ADMIN_TOKEN}
+      OPENAI_KEY: ${OPENAI_KEY:-}
+      PERPLEXITY_KEY: ${PERPLEXITY_KEY:-}
+      ANTHROPIC_KEY: ${ANTHROPIC_KEY:-}
+    expose:
+      - "3001"
+    volumes:
+      # Persist the SQLite file across container rebuilds.
+      - visigine_data:/data
+    restart: unless-stopped
+    networks:
+      - visigine
+
+  frontend:
+    build:
+      context: .
+      dockerfile: docker/frontend.Dockerfile
+    # No host port binding: Coolify/Traefik routes visigine.de to this port 80.
+    expose:
+      - "80"
+    depends_on:
+      backend:
+        condition: service_healthy
+    restart: unless-stopped
+    networks:
+      - visigine
+
+networks:
+  visigine:
+    driver: bridge
+
+volumes:
+  visigine_data: