Migrate to msmtp for mail sending

compose.yml

@@ -16,15 +16,17 @@ services:
     image: wodby/wordpress-php:$PHP_TAG
     container_name: "${PROJECT_NAME}_php"
     environment:
-      # For PHP 8.2 use busybox sendmail together with "PHP_MAIL_MIXED_LF_AND_CRLF=On".
+      # PHP 8.2+ supports "PHP_MAIL_MIXED_LF_AND_CRLF=On" and does not need dos2unix workaround.
       PHP_MAIL_MIXED_LF_AND_CRLF: On
-      PHP_SENDMAIL_PATH: '/bin/busybox sendmail -t -i -S mailhog:25'
-#      PHP_SENDMAIL_PATH: '/bin/busybox sendmail -t -i -S opensmtpd:25'
-#      # For PHP <8.2 use ssmtp instead of sendmail.
-#      SSMTP_MAILHUB: mailhog:1025
-#      SSMTP_MAILHUB: opensmtpd:25
-#      PHP_SENDMAIL_PATH: '"/usr/bin/dos2unix -u | /usr/sbin/ssmtp -t"'
-#      #
+      PHP_SENDMAIL_PATH: '/usr/bin/msmtp -t'
+      #     # PHP 8.1 and previous version require dos2unix workaround.
+      #      PHP_SENDMAIL_PATH: '"/usr/bin/dos2unix -u | /usr/bin/msmtp -t"'
+      # Mailhog:
+      MSMTP_HOST: mailhog
+      MSMTP_PORT: 1025
+      #      # OpenSMTPD:
+      #      MSMTP_HOST: opensmtpd
+      #      MSMTP_PORT: 25
       DB_HOST: $DB_HOST
       DB_USER: $DB_USER
       DB_PASSWORD: $DB_PASSWORD