feat: Add Infinity rerank container with bge-reranker-base (CF-1317)

Local cross-encoder rerank service using BAAI/bge-reranker-base model
via michaelf34/infinity:0.0.68. Serves /rerank endpoint on port 7998
for LiteLLM proxy integration.

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

docker-compose.yml

@@ -0,0 +1,25 @@
+services:
+  infinity-rerank:
+    image: michaelf34/infinity:0.0.68
+    container_name: infinity-rerank
+    command: v2 --model-id BAAI/bge-reranker-base --port 7998 --engine torch
+    ports:
+      - "7998:7998"
+    volumes:
+      - infinity-data:/app/.cache
+    environment:
+      - DO_NOT_TRACK=1
+    restart: unless-stopped
+    deploy:
+      resources:
+        limits:
+          memory: 4G
+    networks:
+      - agiliton-api
+
+volumes:
+  infinity-data:
+
+networks:
+  agiliton-api:
+    external: true