fix: fix the zipline container's restart loop

.devcontainer/docker-compose.yml

@@ -1,10 +1,13 @@
-version: "3"
 services:
   devcontainer:
     container_name: devcontainer
     build:
       context: ..
       dockerfile: .devcontainer/Dockerfile
+    volumes:
+      - ../..:/workspace:cached
+    network_mode: service:zipline
+    command: sleep infinity
 
   postgres:
     container_name: zipline-database
@@ -26,7 +29,7 @@ services:
     container_name: zipline
     image: ghcr.io/diced/zipline:v4
     environment:
-      CORE_SECRET: "secret"
+      CORE_SECRET: "4Q8PrvM8Vwe9yRSRsCuwTdQUSXLYkgt9Gvdg/7/qPgQ="
       CORE_PORT: 3001
       CORE_HOSTNAME: 0.0.0.0
       DATABASE_URL: postgres://zipline:zipline@postgres:5432/zipline