diff --git a/README.md b/README.md
index 3db952d01..11172f736 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@
 ## Quick instance
 
 ```
+export PASSBOOK_DOMAIN=domain.tld
 docker-compose pull
 docker-compose up -d
 docker-compose exec server ./manage.py migrate
diff --git a/docker-compose.yml b/docker-compose.yml
index 3da8514e3..1c391f410 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -28,6 +28,7 @@ services:
       - uwsgi
       - uwsgi.ini
     environment:
+      - PASSBOOK_DOMAIN=${PASSBOOK_DOMAIN}
       - PASSBOOK_REDIS__HOST=redis
       - PASSBOOK_POSTGRESQL__HOST=postgresql
       - PASSBOOK_POSTGRESQL__PASSWORD=${PG_PASS:-thisisnotagoodpassword}
@@ -53,6 +54,7 @@ services:
     labels:
       - traefik.enable=false
     environment:
+      - PASSBOOK_DOMAIN=${PASSBOOK_DOMAIN}
       - PASSBOOK_REDIS__HOST=redis
       - PASSBOOK_POSTGRESQL__HOST=postgresql
       - PASSBOOK_POSTGRESQL__PASSWORD=${PG_PASS:-thisisnotagoodpassword}
diff --git a/passbook/lib/default.yml b/passbook/lib/default.yml
index 8c0119294..57ef14365 100644
--- a/passbook/lib/default.yml
+++ b/passbook/lib/default.yml
@@ -16,7 +16,7 @@ debug: false
 # Error reporting, sends stacktrace to sentry.services.beryju.org
 error_report_enabled: true
 
-domain: passbook.local
+domain: localhost
 
 passbook:
   sign_up:
diff --git a/passbook/root/settings.py b/passbook/root/settings.py
index dab4d9021..e09dfe6eb 100644
--- a/passbook/root/settings.py
+++ b/passbook/root/settings.py
@@ -117,7 +117,7 @@ CACHES = {
 }
 DJANGO_REDIS_IGNORE_EXCEPTIONS = True
 DJANGO_REDIS_LOG_IGNORED_EXCEPTIONS = True
-SESSION_ENGINE = "django.contrib.sessions.backends.cache"
+SESSION_ENGINE = "django.contrib.sessions.backends.cached_db"
 SESSION_CACHE_ALIAS = "default"
 
 MIDDLEWARE = [