Add installation via docker compose (MVP 1)

- Adds configuration parameters (`change_kernel_settings`, `fs_inotify_max_user_instances_and_watchers`)

chatmaild/src/chatmaild/config.py

@@ -44,6 +44,12 @@ class Config:
         )
         self.mtail_address = params.get("mtail_address")
         self.disable_ipv6 = params.get("disable_ipv6", "false").lower() == "true"
+        self.change_kernel_settings = (
+            params.get("change_kernel_settings", "true").lower() == "true"
+        )
+        self.fs_inotify_max_user_instances_and_watchers = int(
+            params["fs_inotify_max_user_instances_and_watchers"]
+        )
         self.imap_rawlog = params.get("imap_rawlog", "false").lower() == "true"
         if "iroh_relay" not in params:
             self.iroh_relay = "https://" + params["mail_domain"]

chatmaild/src/chatmaild/ini/chatmail.ini.f

@@ -49,7 +49,7 @@ passthrough_recipients = xstore@testrun.org echo@{mail_domain}
 # Deployment Details
 #
 
-# SMTP outgoing filtermail and reinjection 
+# SMTP outgoing filtermail and reinjection
 filtermail_smtp_port = 10080
 postfix_reinject_port = 10025
 
@@ -60,6 +60,16 @@ postfix_reinject_port_incoming = 10026
 # if set to "True" IPv6 is disabled
 disable_ipv6 = False
 
+#
+# Kernel settings
+#
+
+# if you set "True", the kernel settings will be configured according to the values below
+change_kernel_settings  = True
+
+# change fs.inotify.max_user_instances and fs.inotify.max_user_watches kernel settings
+fs_inotify_max_user_instances_and_watchers = 65535
+
 # Defaults to https://iroh.{{mail_domain}} and running `iroh-relay` on the chatmail
 # service.
 # If you set it to anything else, the service will be disabled