Small fixes

* fix ACME setup
* use correct port number
* use correct email sender

playbooks/templates/chaosknoten/configs/hackertours/compose.yaml.j2

@@ -23,9 +23,14 @@ services:
     # run redis-server, save a snapshot every 60 seconds if there has been at least 1 write
     command: ["redis-server", "--save", "60", "1"]
     restart: always
+    networks:
+      backend:
 
   pretix:
     image: gitlab-cr.hamburg.ccc.de/ccchh/ccchh-pretix/ccchh-pretix:23.10.0
+    command: ["all"]
+    ports:
+      - "8345:80"
     environment:
       - "PRETIX_INSTANCE_NAME=CCCHH Hackertours"
       - "PRETIX_URL=http://hackertours.hamburg.ccc.de"
@@ -34,7 +39,7 @@ services:
       - "DATABASE_USER=pretix"
       - "DATABASE_PASSWORD={{ lookup("community.general.passwordstore", "noc/vm-secrets/chaosknoten/hackertours/DB_PASSWORD", create=false, missing="error") }}"
       - "DATABASE_HOST=database"
-      - "MAIL_FROM=foo@example.com"
+      - "MAIL_FROM=ticket@hackertours.hamburg.ccc.de"
       - "MAIL_HOST=cow-intern.hamburg.ccc.de"
       - "REDIS_LOCATION=redis://redis/0"
       - "CELERY_BACKEND=redis://redis/0"
@@ -42,6 +47,9 @@ services:
     volumes:
       - pretix:/rdata
     restart: always
+    networks:
+      backend:
+      frontend:
 
 
 volumes: