Dockerfile

FROM php:7.3-fpm-stretch

# entrypoint.sh and cron.sh dependencies
RUN set -ex; \
    \
    apt-get update; \
    apt-get install -y --no-install-recommends \
        rsync \
        bzip2 \
        busybox-static \
        curl \
        smbclient \
    ; \
    rm -rf /var/lib/apt/lists/*; \
    \
    mkdir -p /var/spool/cron/crontabs; \
    echo '*/15 * * * * php -f /var/www/html/cron.php' > /var/spool/cron/crontabs/www-data

# Install phpunit 7
RUN curl -L https://phar.phpunit.de/phpunit-7.phar > /usr/local/bin/phpunit \
    && chmod +x /usr/local/bin/phpunit

# install the PHP extensions we need
# see https://docs.nextcloud.com/server/12/admin_manual/installation/source_installation.html
RUN set -ex; \
    \
    savedAptMark="$(apt-mark showmanual)"; \
    \
    apt-get update; \
    apt-get install -y --no-install-recommends \
        libcurl4-openssl-dev \
        libfreetype6-dev \
        libicu-dev \
        libjpeg-dev \
        libldap2-dev \
        libmcrypt-dev \
        libmemcached-dev \
        libpng-dev \
        libpq-dev \
        libxml2-dev \
        libmagickwand-dev \
        libsmbclient-dev \
        libzip-dev \
    ; \
    \
    debMultiarch="$(dpkg-architecture --query DEB_BUILD_MULTIARCH)"; \
    docker-php-ext-configure gd --with-freetype-dir=/usr --with-png-dir=/usr --with-jpeg-dir=/usr; \
    docker-php-ext-configure ldap --with-libdir="lib/$debMultiarch"; \
    docker-php-ext-install \
        exif \
        gd \
        intl \
        ldap \
        opcache \
        pcntl \
        pdo_mysql \
        pdo_pgsql \
        zip \
    ; \
    \
# pecl will claim success even if one install fails, so we need to perform each install separately
    pecl install APCu; \
    pecl install memcached; \
    pecl install redis; \
    pecl install imagick; \
    pecl install xdebug; \
    pecl install smbclient; \
    \
    docker-php-ext-enable \
        apcu \
        memcached \
        redis \
        imagick \
        xdebug \
        smbclient \
    ; \
    \
# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
    apt-mark auto '.*' > /dev/null; \
    apt-mark manual $savedAptMark; \
    ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
        | awk '/=>/ { print $3 }' \
        | sort -u \
        | xargs -r dpkg-query -S \
        | cut -d: -f1 \
        | sort -u \
        | xargs -rt apt-mark manual; \
    \
    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
    rm -rf /var/lib/apt/lists/*

# samba
RUN { \
        echo '[global]'; \
        echo 'client min protocol = SMB2'; \
        echo 'client max protocol = SMB3'; \
        echo 'hide dot files = no'; \
    } > /etc/samba/smb.conf

# npm
RUN curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash \
    && export NVM_DIR="/root/.nvm" \
    && . "$NVM_DIR/nvm.sh" \
    && nvm install --lts

# set recommended PHP.ini settings
# see https://docs.nextcloud.com/server/12/admin_manual/configuration_server/server_tuning.html#enable-php-opcache
RUN { \
        echo 'opcache.enable=1'; \
        echo 'opcache.enable_cli=1'; \
        echo 'opcache.interned_strings_buffer=8'; \
        echo 'opcache.max_accelerated_files=10000'; \
        echo 'opcache.memory_consumption=128'; \
        echo 'opcache.save_comments=1'; \
        echo 'opcache.revalidate_freq=1'; \
    } > /usr/local/etc/php/conf.d/opcache-recommended.ini; \
    \
    echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
    \
    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
    \
    mkdir /var/www/data; \
    chown -R www-data:root /var/www; \
    chmod -R g=u /var/www

# Add a "docker" user
RUN useradd docker --shell /bin/bash --create-home \
    && usermod --append --groups sudo docker \
    && echo 'ALL ALL = (ALL) NOPASSWD: ALL' >> /etc/sudoers \
    && echo 'docker:secret' | chpasswd

# Cleanup
RUN apt-get clean && apt-get --yes --quiet autoremove --purge \
    && rm -Rf /tmp/*

USER docker

VOLUME /var/www/nextcloud
WORKDIR /var/www/nextcloud