Dockerfile

FROM php:7.0.6-fpm-alpine
MAINTAINER Tomaz Zaman <tomaz@codeable.io>

# We need these system-level scritps to run WordPress successfully
RUN apk add --no-cache nginx mysql-client supervisor curl \
    bash redis imagemagick-dev

# As per image documentation, this is how we install PHP modules
RUN docker-php-ext-install -j$(grep -c ^processor /proc/cpuinfo 2>/dev/null || 1) \
    iconv gd mbstring fileinfo curl xmlreader xmlwriter spl ftp mysqli opcache

# Install imagemagick for PHP
RUN apk add --no-cache libtool build-base autoconf \
    && pecl install imagick \
    && docker-php-ext-enable imagick \
    && apk del libtool build-base autoconf

# Create a user called "deployer" without a password and belonging
# to the same group as php-fpm and nginx belong to
RUN adduser -D deployer -s /bin/bash -G www-data

# Set working directory to wp-content, which is a mounted volume
VOLUME /var/www/content
WORKDIR /var/www/content

# Environment variables that make the reuse easier
ENV WP_ROOT /usr/src/wordpress
ENV WP_VERSION 4.5.2
ENV WP_SHA1 bab94003a5d2285f6ae76407e7b1bbb75382c36e
ENV WP_DOWNLOAD_URL https://wordpress.org/wordpress-$WP_VERSION.tar.gz

# Download WP and extract it to /usr/src/wordpress
RUN curl -o wordpress.tar.gz -SL $WP_DOWNLOAD_URL \
	&& echo "$WP_SHA1 *wordpress.tar.gz" | sha1sum -c - \
	&& tar -xzf wordpress.tar.gz -C /usr/src/ \
	&& rm wordpress.tar.gz

# Copy our cron configuration and set proper permissions
COPY cron.conf /etc/crontabs/deployer
RUN chmod 600 /etc/crontabs/deployer

# Install WP-CLI (for convenience)
RUN curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar \
    && chmod +x wp-cli.phar \
    && mv wp-cli.phar /usr/local/bin/wp

# Copy over our custom Nginx configuration and log to stderr/stdout
COPY nginx.conf /etc/nginx/nginx.conf
COPY virtual-host.conf /etc/nginx/conf.d/
RUN ln -sf /dev/stdout /var/log/nginx/access.log \
    && ln -sf /dev/stderr /var/log/nginx/error.log \
    && chown -R www-data:www-data /var/lib/nginx

# Copy our configuration and set proper permissions
COPY wp-config.php $WP_ROOT
RUN chown -R deployer:www-data $WP_ROOT \
    && chmod 640 $WP_ROOT/wp-config.php

RUN mkdir -p /var/www/content/uploads \
    && chown -R www-data:www-data /var/www/content/uploads

# Copy supervisor configuration for both processes
RUN mkdir -p /var/log/supervisor
COPY supervisord.conf /etc/supervisord.conf

# Copy and prepare the entrypoint
COPY docker-entrypoint.sh /
RUN chmod +x /docker-entrypoint.sh
ENTRYPOINT [ "/docker-entrypoint.sh" ]

CMD [ "/usr/bin/supervisord", "-c", "/etc/supervisord.conf" ]