server: use redis pubsub for interprocess websocket communication

server/docker-compose.yml

@@ -1,15 +1,19 @@
 version: "3.9"
 services:
-  server:
-    build:
-      context: .
+  # server:
+  #   build:
+  #     context: .
+  #   ports:
+  #     - 1250:1250
+  #   environment:
+  #     LLM_URL: "${LLM_URL}"
+  #     MIN_TRANSCRIPT_LENGTH: "${MIN_TRANSCRIPT_LENGTH}"
+  #   volumes:
+  #     - model-cache:/root/.cache
+  redis:
+    image: redis:7.2
     ports:
-      - 1250:1250
-    environment:
-      LLM_URL: "${LLM_URL}"
-      MIN_TRANSCRIPT_LENGTH: "${MIN_TRANSCRIPT_LENGTH}"
-    volumes:
-      - model-cache:/root/.cache
+      - 6379:6379
 
 volumes:
   model-cache: