diff --git a/docker-compose.pullpreview.yml b/docker-compose.pullpreview.yml
index 34b4009944..25cd5c2ed9 100644
--- a/docker-compose.pullpreview.yml
+++ b/docker-compose.pullpreview.yml
@@ -10,10 +10,8 @@ db:
   expose:
     - '5432'
 
-worker: &ruby
+web:
   build: .
-  volumes:
-    - .:/usr/src/app
   links:
     - db
   environment:
@@ -23,12 +21,25 @@ worker: &ruby
     - "RAILS_ENV=production"
     - "HEROKU=true"
     - "OP_ADMIN_USER_SEEDER_FORCE_PASSWORD_CHANGE=off"
-  command: "bundle exec rake db:migrate db:seed jobs:work"
-  memory: 384
-
-web:
-  <<: *ruby
   ports:
     - "80:8080"
   command: "./docker/web"
   memory: 1024
+  volumes:
+    - .:/files
+
+worker:
+  build: .
+  links:
+    - db
+  environment:
+    - "RAILS_CACHE_STORE=file_store"
+    - "DATABASE_URL=postgresql://app:p4ssw0rd@db:5432/app?encoding=utf8&pool=5&timeout=5000&reconnect=true"
+    - "SECRET_KEY_BASE=d4e74f017910ac56c6ebad01165b7e1b37f4c9c02e9716836f8670cdc8d65a231e64e4f6416b19c8"
+    - "RAILS_ENV=production"
+    - "HEROKU=true"
+    - "OP_ADMIN_USER_SEEDER_FORCE_PASSWORD_CHANGE=off"
+  command: "bundle exec rake db:migrate db:seed jobs:work"
+  memory: 384
+  volumes_from:
+    - web