diff --git a/.env b/.env
index 5353f6c..0168bc3 100644
--- a/.env
+++ b/.env
@@ -1,2 +1,2 @@
-REDIS_PORT_6379_TCP_ADDR=calcnetignet_redis
-REDIS_PORT_6379_TCP_PORT=6379
+ETHERCALC_DISABLE_ROOM_INDEX=1
+ETHERCALC_ROOM_CREATE_LIMIT=1
diff --git a/compose.yml b/compose.yml
index ef1de43..29b36ff 100644
--- a/compose.yml
+++ b/compose.yml
@@ -1,18 +1,23 @@
 services:
-  redis:
-    image: redis:latest
-    container_name: calcnetignet_redis
-    volumes:
-      - ./volumes/redis:/data
-    command: redis-server --appendonly yes
-    restart: unless-stopped
   ethercalc:
-    image: audreyt/ethercalc:latest
+    image: audreyt/ethercalc:tatest
     container_name: calcnetignet_ethercalc
-    depends_on:
-      - redis
-    env_file:
-      - .env
+    restart: unless-stopped
+    read_only: true
+    security_opt:
+      - no-new-privileges:true
+    tmpfs:
+      - /tmp:size=64m,mode=1777
     ports:
       - "127.0.0.1:9004:8000"
-    restart: unless-stopped
+    volumes:
+      - ./volumes/ethercalc:/data
+    env_file:
+      - .env
+    healthcheck:
+      test: ["CMD-SHELL", "curl -fsS http://localhost:8000/_health >/dev/null || exit 1"]
+      interval: 10s
+      timeout: 3s
+      retries: 6
+      start_period: 15s
+