Palier 3: Postfix + Dovecot working! Mail test successful with swaks

postfix/Dockerfile

@@ -1,43 +1,18 @@
-# Image de base Alpine, légère
-FROM alpine:3.21
+FROM debian:bookworm-slim
 
-# Installer Postfix et les outils
-RUN apk add --no-cache postfix postfix-pcre rsyslog
+RUN apt-get update && apt-get install -y postfix mailutils
 
-# --- Utilisateur dédié au stockage des mails virtuels ---
-# Tous les mails appartiendront à cet utilisateur "vmail" (uid/gid 5000)
-# Supprimer le vmail créé par défaut par Postfix, puis recréer le nôtre en uid/gid 5000
-RUN (deluser vmail 2>/dev/null || true) \
-    && (delgroup vmail 2>/dev/null || true) \
-    && addgroup -g 5000 vmail \
-    && adduser -D -u 5000 -G vmail -h /var/mail/vhosts vmail \
-    && mkdir -p /var/mail/vhosts/ayoinc.test \
-    && chown -R vmail:vmail /var/mail/vhosts
-# --- Configuration Postfix de base ---
-RUN postconf -e "myhostname = mail.ayoinc.test" \
-    && postconf -e "mydomain = ayoinc.test" \
-    && postconf -e "myorigin = \$mydomain" \
-    # Postfix ne gère PAS lui-même notre domaine en "local" : c'est du virtuel
-    && postconf -e "mydestination = localhost" \
-    && postconf -e "inet_interfaces = all" \
-    && postconf -e "inet_protocols = ipv4"
+COPY ../share/users.txt /tmp/users.txt
+COPY ../share/postfix.sh /tmp/postfix.sh
+COPY postfix/main.cf /etc/postfix/main.cf
+COPY postfix/entrypoint.sh /entrypoint.sh
 
-# --- Configuration des boîtes virtuelles ---
-RUN postconf -e "virtual_mailbox_domains = ayoinc.test" \
-    && postconf -e "virtual_mailbox_base = /var/mail/vhosts" \
-    && postconf -e "virtual_mailbox_maps = lmdb:/etc/postfix/vmailbox" \
-    && postconf -e "virtual_minimum_uid = 5000" \
-    && postconf -e "virtual_uid_maps = static:5000" \
-    && postconf -e "virtual_gid_maps = static:5000"
+RUN chmod 644 /etc/postfix/main.cf && \
+    chmod +x /tmp/postfix.sh /entrypoint.sh && \
+    /tmp/postfix.sh > /etc/postfix/virtual_mailbox && \
+    postmap /etc/postfix/virtual_mailbox && \
+    rm /tmp/users.txt /tmp/postfix.sh
 
-# --- Déclaration des comptes virtuels (alice & bob) ---
-# Chaque ligne : adresse -> chemin Maildir (le / final = format Maildir)
-RUN echo "alice@ayoinc.test    ayoinc.test/alice/" >  /etc/postfix/vmailbox \
-    && echo "bob@ayoinc.test      ayoinc.test/bob/"   >> /etc/postfix/vmailbox \
-    && postmap lmdb:/etc/postfix/vmailbox
+EXPOSE 25 587
 
-# Exposer le port SMTP
-EXPOSE 25
-
-# Lancer Postfix au premier plan
-CMD ["postfix", "start-fg"]
+CMD ["/entrypoint.sh"]

postfix/entrypoint.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+set -e
+postfix start
+tail -f /dev/null

postfix/main.cf

@@ -0,0 +1,15 @@
+myhostname = mail.ayoinc.test
+myorigin = ayoinc.test
+mydestination = localhost
+mynetworks = 127.0.0.0/8 [::1]/128
+inet_interfaces = all
+
+virtual_mailbox_domains = ayoinc.test
+virtual_mailbox_base = /var/mail/vhosts
+virtual_mailbox_maps = hash:/etc/postfix/virtual_mailbox
+virtual_uid_maps = static:5000
+virtual_gid_maps = static:5000
+virtual_transport = virtual
+
+smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
+maillog_file = /dev/stdout