Docker | WordPress | Mailhog: Add the ability to send email from WordPress and have it caught in Mailhog.

readme.md

Add the ability to send email from WordPress and have it caught in Mailhog.

Adding a custom dockerfile based on the official WordPress docker file with MSMTP install and configured.

This sets the default SMTP details for the server to those of MailHog.

docker-compose.yml

volumes:
    db_data:

version: '3.7'
services:

  mysql:
    container_name: mysql
    image: mysql:5.7
    volumes:
      - ./db:/docker-entrypoint-initdb.d
      - ./db_data:/var/lib/mysql
    restart: always
    ports:
      - 3306:3306
    environment:
      MYSQL_ROOT_PASSWORD: wordpress
      MYSQL_DATABASE: wordpress
      MYSQL_USER: wordpress
      MYSQL_PASSWORD: wordpress

  wordpress:
    container_name: wordpress
    build:
      dockerfile: ./wordpress.dockerfile
      context: .
    volumes:
      - ./:/var/www/
      - ./php.ini:/usr/local/etc/php/php.ini
    depends_on:
      - mysql
    links:
      - mysql:mysql
    restart: always
    ports:
      - 8080:80
    environment:
      WORDPRESS_DB_HOST: mysql:3306
      WORDPRESS_DB_NAME: wordpress
      WORDPRESS_DB_USER: wordpress
      WORDPRESS_DB_PASSWORD: wordpress

  mailhog:
    container_name: mailhog
    image: mailhog/mailhog:latest
    restart: always
    ports:
      - 1025:1025
      - 8025:8025

volumes:
  wordpress:
  db_data:

msmtprc

# Set default values for all following accounts.
account        default
host           mailhog
port           1025
from           webmaster@localhost
tls            off
tls_starttls   off
syslog         LOG_MAIL
logfile        /var/www/msmtp.log

php.ini

sendmail_path = "/usr/bin/msmtp -t"
mail.log = "/var/www/phpmail.log"

wordpress.dockerfile

FROM wordpress:latest
RUN apt-get update && apt-get install msmtp -y && \
    rm -rf /var/lib/apt/lists/*
COPY msmtprc /etc/msmtprc
RUN chown :msmtp /etc/msmtprc && \
    chmod 640 /etc/msmtprc