Add AIO Dockerfile

docker/postfix/aliases

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+# Postfix aliases for happyDeliver
+# This file is processed by postalias to create aliases.db
+
+# Standard aliases
+postmaster: root
+abuse: root
+mailer-daemon: postmaster
+
+# Root mail can be redirected if needed
+# root: admin@example.com

docker/postfix/main.cf

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+# Postfix main configuration for happyDeliver
+# This configuration receives emails and routes them through authentication filters
+
+# Basic settings
+compatibility_level = 3.6
+myhostname = __HOSTNAME__
+mydomain = __DOMAIN__
+myorigin = $mydomain
+inet_interfaces = all
+inet_protocols = ipv4
+
+# Recipient settings
+mydestination = $myhostname, localhost.$mydomain, localhost
+mynetworks = 127.0.0.0/8 [::1]/128
+
+# Relay settings - accept mail for our test domain
+relay_domains = $mydomain
+
+# Queue and size limits
+message_size_limit = 10485760
+mailbox_size_limit = 0
+queue_minfree = 50000000
+
+# Transport maps - route test emails to happyDeliver analyzer
+transport_maps = pcre:/etc/postfix/transport_maps
+
+# Authentication milters
+# OpenDKIM for DKIM verification
+milter_default_action = accept
+milter_protocol = 6
+smtpd_milters = unix:/var/spool/postfix/opendkim/opendkim.sock, unix:/var/spool/postfix/opendmarc/opendmarc.sock
+non_smtpd_milters = $smtpd_milters
+
+# SPF policy checking
+smtpd_recipient_restrictions =
+    permit_mynetworks,
+    reject_unauth_destination,
+    check_policy_service unix:private/policy-spf
+
+# Logging
+debug_peer_level = 2

docker/postfix/master.cf

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+# Postfix master process configuration for happyDeliver
+
+# SMTP service
+smtp      inet  n       -       n       -       -       smtpd
+  -o content_filter=spamassassin
+
+# Pickup service
+pickup    unix  n       -       n       60      1       pickup
+
+# Cleanup service
+cleanup   unix  n       -       n       -       0       cleanup
+
+# Queue manager
+qmgr      unix  n       -       n       300     1       qmgr
+
+# Rewrite service
+rewrite   unix  -       -       n       -       -       trivial-rewrite
+
+# Bounce service
+bounce    unix  -       -       n       -       0       bounce
+
+# Defer service
+defer     unix  -       -       n       -       0       bounce
+
+# Trace service
+trace     unix  -       -       n       -       0       bounce
+
+# Verify service
+verify    unix  -       -       n       -       1       verify
+
+# Flush service
+flush     unix  n       -       n       1000?   0       flush
+
+# Proxymap service
+proxymap  unix  -       -       n       -       -       proxymap
+
+# Proxywrite service
+proxywrite unix -       -       n       -       1       proxymap
+
+# SMTP client
+smtp      unix  -       -       n       -       -       smtp
+
+# Relay service
+relay     unix  -       -       n       -       -       smtp
+
+# Showq service
+showq     unix  n       -       n       -       -       showq
+
+# Error service
+error     unix  -       -       n       -       -       error
+
+# Retry service
+retry     unix  -       -       n       -       -       error
+
+# Discard service
+discard   unix  -       -       n       -       -       discard
+
+# Local delivery
+local     unix  -       n       n       -       -       local
+
+# Virtual delivery
+virtual   unix  -       n       n       -       -       virtual
+
+# LMTP delivery
+lmtp      unix  -       -       n       -       -       lmtp
+
+# Anvil service
+anvil     unix  -       -       n       -       1       anvil
+
+# Scache service
+scache    unix  -       -       n       -       1       scache
+
+# Maildrop service
+maildrop  unix  -       n       n       -       -       pipe
+  flags=DRXhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
+
+# SPF policy service
+policy-spf unix -       n       n       -       0       spawn
+  user=nobody argv=/usr/bin/postfix-policyd-spf-perl
+
+# SpamAssassin content filter
+spamassassin unix -     n       n       -       -       pipe
+  user=mail argv=/usr/bin/spamc -f -e /usr/sbin/sendmail -oi -f ${sender} ${recipient}
+
+# happyDeliver analyzer - receives emails matching transport_maps
+happydeliver unix -     n       n       -       -       pipe
+  flags=DRXhu user=happydeliver argv=/usr/local/bin/happyDeliver analyze -config /etc/happydeliver/config.yaml -recipient ${recipient}

docker/postfix/transport_maps

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+# Transport map - route test emails to happyDeliver analyzer
+# Pattern: test-<uuid>@domain.com -> happydeliver pipe
+
+/^test-[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}@.*$/  happydeliver: