Trouble with Alpine php-fpm configuration (xdebug+netbeans, sendmail+mailhog) - php

Question

I'm trying to setup development environment for one PHP application but I can't solve these two things:
sending emails (I would like use MailHog which is running but it seems that I haven't correct PHP configuration)
xdebug (is installed and log is working but I can not connect it from NetBeans IDE)
Here is my configuration:
docker-compose.yml:
version: "3.1"
services:
# MySQL
database:
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_USER: testuser
MYSQL_PASSWORD: testpass
MYSQL_DATABASE: testdb
image: mariadb
restart: always
volumes:
- "./docker/mariadb/data:/var/lib/mysql"
- "./docker/mariadb/init:/docker-entrypoint-initdb.d"
# PHP
php-fpm:
build:
context: ./docker/php-fpm
environment:
ENV_MODE: development
ENV_BRANCH: test
volumes:
- "./:/var/www/app"
# NGINX
webserver:
build:
context: ./docker/nginx
depends_on:
- php-fpm
environment:
MYSQL_DATABASE: testdb
MYSQL_USER: testuser
MYSQL_PASSWORD: testpass
MYSQL_ROOT_PASSWORD: root
links:
- database:mysql
- mailhog
ports:
- "80:80"
- "443:443"
volumes:
- "./:/var/www/inpage"
- "./docker/nginx/nginx.conf:/etc/nginx/nginx.conf"
- "./docker/nginx/inpage.inc.conf:/etc/nginx/inpage.inc.conf"
- "./docker/nginx/inpage-site.inc.conf:/etc/nginx/app-site.inc.conf"
- "./docker/nginx/sites/:/etc/nginx/sites-available"
- "./docker/nginx/conf.d/:/etc/nginx/conf.d"
# Adminer
adminer:
depends_on:
- database
environment:
ADMINER_DEFAULT_SERVER: database
image: adminer
ports:
- 8181:8080
restart: always
# MailHog
mailhog:
image: mailhog/mailhog
command: -smtp-bind-addr 127.0.0.1:1025
user: root
expose:
- 1025
- 8025
ports:
- 1025:1025
- 8025:8025
docker/php-fpm/Dockerfile:
# Customized Dockerfile from https://github.com/kporras07/docker-php.
FROM php:7.0-fpm-alpine
# Environment settings
ENV XDEBUG_VERSION 2.3.3
ENV PHP_MEMORY_LIMIT 256M
ENV PHP_MAX_EXECUTION_TIME 120
ENV PHP_POST_MAX_SIZE 100M
ENV PHP_UPLOAD_MAX_FILESIZE 100M
ENV PHP_INI_DIR /usr/local/etc/php
# Configure, build & install PHP
RUN docker-php-source extract \
&& apk --no-cache --update add \
libxml2-dev \
libpng \
libpng-dev \
libjpeg-turbo \
libjpeg-turbo-dev \
freetype-dev \
freetype \
libcurl \
curl-dev \
curl \
icu-dev \
g++ \
autoconf \
make \
libmcrypt-dev \
libmcrypt \
libintl \
openssl-dev \
re2c \
recode-dev \
sqlite-dev \
enchant-dev \
krb5-dev \
pcre-dev \
imagemagick-dev \
imagemagick \
libtool \
bzip2-dev \
freetds-dev \
freetype-dev \
gmp-dev \
imap-dev \
readline-dev \
recode-dev \
zip \
libzip \
libzip-dev \
libxslt \
libxslt-dev \
&& rm -rf /tmp/* \
&& rm -rf /var/cache/apk/* \
&& docker-php-ext-configure bcmath \
&& docker-php-ext-configure bz2 \
&& docker-php-ext-configure json \
&& docker-php-ext-configure session \
&& docker-php-ext-configure ctype \
&& docker-php-ext-configure curl \
&& docker-php-ext-configure tokenizer \
&& docker-php-ext-configure simplexml \
&& docker-php-ext-configure dom \
&& docker-php-ext-configure mbstring \
&& docker-php-ext-configure zip \
&& docker-php-ext-configure iconv \
&& docker-php-ext-configure xml \
&& docker-php-ext-configure opcache \
&& docker-php-ext-configure pdo \
&& docker-php-ext-configure pdo_mysql \
&& docker-php-ext-configure pdo_sqlite \
&& docker-php-ext-configure gettext \
&& docker-php-ext-configure gmp \
&& docker-php-ext-configure intl --enable-intl \
&& docker-php-ext-configure mcrypt \
&& docker-php-ext-configure phar \
&& docker-php-ext-configure soap \
&& docker-php-ext-configure sockets \
&& docker-php-ext-configure xml \
&& docker-php-ext-configure xsl \
&& docker-php-ext-configure gd --with-gd --with-freetype-dir=/usr/include/ \
--with-jpeg-dir=/usr/include/ \
--with-png-dir=/usr/include/ \
&& NPROC=$(grep -c ^processor /proc/cpuinfo 2>/dev/null || 1) \
&& docker-php-ext-install -j${NPROC} gd \
&& docker-php-source delete
RUN docker-php-ext-install bcmath \
bz2 \
json \
session \
ctype \
curl \
tokenizer \
simplexml \
dom \
mbstring \
zip \
iconv \
xml \
opcache \
pdo \
pdo_mysql \
gettext \
gmp \
intl \
mcrypt \
phar \
soap \
sockets \
xml \
xsl
RUN apk update \
&& apk add ca-certificates wget \
&& update-ca-certificates
# Blackfire.io
RUN version=$(php -r "echo PHP_MAJOR_VERSION.PHP_MINOR_VERSION;") \
&& curl -A "Docker" -o /tmp/blackfire-probe.tar.gz -D - -L -s https://blackfire.io/api/v1/releases/probe/php/alpine/amd64/$version \
&& mkdir -p /tmp/blackfire \
&& tar zxpf /tmp/blackfire-probe.tar.gz -C /tmp/blackfire \
&& mv /tmp/blackfire/blackfire-*.so $(php -r "echo ini_get('extension_dir');")/blackfire.so \
&& printf "extension=blackfire.so\nblackfire.agent_socket=tcp://blackfire:8707\n" > $PHP_INI_DIR/conf.d/blackfire.ini \
&& rm -rf /tmp/blackfire /tmp/blackfire-probe.tar.gz
# Xdebug
RUN pecl install xdebug
RUN docker-php-ext-enable xdebug
COPY ./xdebug.ini /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
## mhsendmail for MailHog (https://github.com/mailhog/mhsendmail)
RUN apk update && apk add \
go \
git
RUN mkdir /root/go
ENV GOPATH=/root/go
ENV PATH=$PATH:$GOPATH/bin
RUN go get github.com/mailhog/mhsendmail
RUN cp /root/go/bin/mhsendmail /usr/bin/mhsendmail
COPY ./php.ini /usr/local/etc/php/conf.d/docker-php.ini
# Fix iconv lib (https://github.com/docker-library/php/issues/240#issuecomment-305038173)
RUN apk add --no-cache --repository http://dl-3.alpinelinux.org/alpine/edge/testing gnu-libiconv
ENV LD_PRELOAD /usr/lib/preloadable_libiconv.so php
# Cleanup
RUN rm -rf /tmp/* \
&& rm -rf /var/cache/apk/* \
&& rm -rf tmp/*
CMD ["php-fpm"]
EXPOSE 9000
docker/php-fpm/xdebug.ini:
zend_extension=/usr/local/lib/php/extensions/no-debug-non-zts-20151012/xdebug.so
xdebug.coverage_enable=0
xdebug.remote_enable=1
xdebug.remote_handler=dbgp
xdebug.remote_mode=req
;xdebug.remote_host=127.0.0.1
xdebug.remote_port=9000
;xdebug.remote_connect_back=1
xdebug.remote_log=/tmp/xdebug.log
;xdebug.remote_autostart=true
docker/php-fpm/php.ini:
memory_limit = ${PHP_MEMORY_LIMIT}
max_execution_time = ${PHP_MAX_EXECUTION_TIME}
post_max_size=${PHP_POST_MAX_SIZE}
upload_max_filesize=${PHP_UPLOAD_MAX_FILESIZE}
sendmail_path = /usr/bin/mhsendmail -S mailhog:1025 -t

Answer 1

I found a solution to the mailhog 'connection refused' part of this question on the mailhog github issues pages. You need to replace the sendmail_path statement in your
docker/php-fpm/php.ini with something like this (the -S option isn't supported, and the position of the quote marks is important):
sendmail_path = "/usr/bin/mhsendmail --smtp-addr=mailhog:1025"
Also I found that I didn't need to use the command, user or expose parts of the mailhog service section in the docker-compose file.