postfix config initial

Dockerfile

@@ -9,7 +9,10 @@ RUN apt-get update && \
   echo "deb http://download.proxmox.com/debian/pbs buster pbs-no-subscription" > /etc/apt/sources.list.d/pbs-no-subscription.list && \
   wget http://download.proxmox.com/debian/proxmox-ve-release-6.x.gpg -O /etc/apt/trusted.gpg.d/proxmox-ve-release-6.x.gpg && \
   apt-get update && \
-  apt-get install -y proxmox-backup-server
+  apt-get install -y proxmox-backup-server postfix
+
+ENV POSTFIX_RELAY_HOST=127.0.0.1
+COPY main.cf /etc/postfix/main.cf
 
 #Activate backup user
 RUN chsh -s /bin/bash backup

entrypoint.sh

@@ -8,10 +8,16 @@ chmod -R 700 /var/lib/proxmox-backup
 chown -R backup:backup /datastore
 chmod -R 700 /datastore
 
+#Change postfix config
+sed -i "s/smtp      unix  -       -       y       -       -       smtp/smtp      unix  -       -       n       -       -       smtp/g" /etc/postfix/master.cf
+sed -i "s/docker_hostname/$(hostname)/g" /etc/postfix/main.cf
+sed -i "s/\#relayhost = /\relayhost = $(POSTFIX_RELAY_HOST)/g" /etc/postfix/main.cf
+
 #Set password from environment variable
 echo "root:$ROOT_PASSWD" | chpasswd
 
 # Start the first process
+/usr/bin/postfix start
 ./usr/lib/x86_64-linux-gnu/proxmox-backup/proxmox-backup-api &
 sleep 10
 

main.cf

@@ -0,0 +1,42 @@
+# See /usr/share/postfix/main.cf.dist for a commented, more complete version
+
+
+# Debian specific:  Specifying a file name will cause the first
+# line of that file to be used as the name.  The Debian default
+# is /etc/mailname.
+myorigin = docker_hostname
+
+smtpd_banner = $myhostname ESMTP (Debian/GNU)
+biff = no
+
+# appending .domain is the MUA's job.
+append_dot_mydomain = no
+
+# Uncomment the next line to generate "delayed mail" warnings
+#delay_warning_time = 4h
+
+readme_directory = no
+
+# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
+# fresh installs.
+compatibility_level = 2
+maillog_file=/var/log/postfix.log
+
+
+# TLS parameters
+smtp_use_tls=no
+
+# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
+# information on enabling SSL in the smtp client.
+
+smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated 
+myhostname = docker_hostname
+alias_maps = hash:/etc/aliases
+alias_database = hash:/etc/aliases
+mydestination = $myhostname, docker_hostname, localhost.localdomain, localhost
+#relayhost = 
+mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
+mailbox_size_limit = 0
+recipient_delimiter = +
+inet_interfaces = all
+inet_protocols = all