Thread through that contact form env var

.env.sample

@@ -8,6 +8,7 @@ PEERTUBE_WEBSERVER_HTTPS=true
 PEERTUBE_ADMIN_EMAIL=admin@example.com   # <= EDIT THIS
 PEERTUBE_SIGNUP_ENABLED=false
 PEERTUBE_TRANSCODING_ENABLED=true
+PEERTUBE_CONTACT_FORM_ENABLED=false
 
 SECRET_DB_PASSWORD_VERSION=v1
 

compose.yml

@@ -42,6 +42,7 @@ services:
     image: chocobozzz/peertube:v3.1.0-buster
     environment:
       - PEERTUBE_ADMIN_EMAIL
+      - PEERTUBE_CONTACT_FORM_ENABLED
       - PEERTUBE_DB_HOSTNAME: db
       - PEERTUBE_DB_PASSWORD_FILE: /run/secrets/db_password
       - PEERTUBE_DB_USERNAME: peertube