Make use of docker-compose.override.yml to track changes + completely disable ipv6

https://cloud.gnous.fr/apps/deck/#/board/4/card/25
https://docs.mailcow.email/post_installation/firststeps-disable_ipv6/

data/conf/dovecot/dovecot.conf

@@ -159,7 +159,7 @@ service lmtp {
   }
   user = vmail
 }
-listen = *,[::]
+listen = *
 ssl_cert = </etc/ssl/mail/cert.pem
 ssl_key = </etc/ssl/mail/key.pem
 userdb {

data/conf/nginx/dynmaps.conf

@@ -1,6 +1,5 @@
 server {
   listen 8081;
-  listen [::]:8081;
   index index.php index.html;
   server_name _;
   error_log  /var/log/nginx/error.log;

data/conf/nginx/templates/listen_plain.template

@@ -1,2 +1 @@
 listen ${HTTP_PORT};
-listen [::]:${HTTP_PORT};

data/conf/nginx/templates/listen_ssl.template

@@ -1,2 +1 @@
 listen ${HTTPS_PORT} ssl http2;
-listen [::]:${HTTPS_PORT} ssl http2;

data/conf/phpfpm/php-fpm.d/pools.conf

@@ -6,7 +6,7 @@ pm.max_children = 15
 pm.start_servers = 2
 pm.min_spare_servers = 2
 pm.max_spare_servers = 4
-listen = [::]:9001
+listen = 9001
 access.log = /proc/self/fd/2
 clear_env = no
 catch_workers_output = yes
@@ -21,7 +21,7 @@ pm.max_children = 50
 pm.start_servers = 10
 pm.min_spare_servers = 10
 pm.max_spare_servers = 15
-listen = [::]:9002
+listen = 9002
 access.log = /proc/self/fd/2
 clear_env = no
 catch_workers_output = yes