Make SMTP host setting configurable (#77)

* Allows to configure a STMP server different from the one in docker-compose

* Addresses @ostefano regarding envvars with defaults

* Ensures default is present in template.env

core/files/entrypoint_nginx.sh

@@ -18,6 +18,7 @@ trap term_proc SIGTERM
 [ -z "$BASE_URL" ] && export BASE_URL="https://localhost"
 [ -z "$DISABLE_IPV6" ] && export DISABLE_IPV6=false
 [ -z "$DISABLE_SSL_REDIRECT" ] && export DISABLE_SSL_REDIRECT=false
+[ -z "$SMTP_FQDN" ] && export SMTP_FQDN=mail
 
 init_mysql(){
     # Test when MySQL is ready....
@@ -93,7 +94,7 @@ class EmailConfig {
     public \$default = array(
         'transport'     => 'Smtp',
         'from'          => array('misp-dev@admin.test' => 'Misp DEV'),
-        'host'          => 'mail',
+        'host'          => '$SMTP_FQDN',
         'port'          => 25,
         'timeout'       => 30,
         'client'        => null,
@@ -102,7 +103,7 @@ class EmailConfig {
     public \$smtp = array(
         'transport'     => 'Smtp',
         'from'          => array('misp-dev@admin.test' => 'Misp DEV'),
-        'host'          => 'mail',
+        'host'          => '$SMTP_FQDN',
         'port'          => 25,
         'timeout'       => 30,
         'client'        => null,
@@ -128,7 +129,7 @@ class EmailConfig {
         'attachments'   => null,
         'emailFormat'   => null,
         'transport'     => 'Smtp',
-        'host'          => 'mail',
+        'host'          => '$SMTP_FQDN',
         'port'          => 25,
         'timeout'       => 30,
         'client'        => null,

docker-compose.yml

@@ -158,6 +158,8 @@ services:
       - "MYSQL_DATABASE=${MYSQL_DATABASE:-misp}"
       # Debug setting 
       - "DEBUG=${DEBUG}"
+      # SMTP setting
+      - "SMTP_FQDN=${SMTP_FQDN}"
   
   misp-modules:
     image: ghcr.io/misp/misp-docker/misp-modules:latest

template.env

@@ -44,6 +44,9 @@ BASE_URL=
 # store settings in db except those that must stay in config.php. true/false, defaults to false
 ENABLE_DB_SETTINGS=
 
+# Defines what mail system to use defaults to 'mail' which is provided in docker-compose.yml
+SMTP_FQDN=mail
+
 # optional and used by the mail sub-system
 SMARTHOST_ADDRESS=
 SMARTHOST_PORT=