Jessie-based PHP container, built from source - doesn't work due to issues with dependencies

Dockerfile

+FROM php:7.0-fpm-jessie
+MAINTAINER Dave Lane <dave@oerfoundation.org> (@lightweight)
+
+#ENV PHPREDIS_VERSION 3.1.4
+RUN apt-get update && apt-get install -y software-properties-common apt-utils
+RUN DEBIAN_FRONTEND="noninteractive" add-apt-repository ppa:ondrej/php
+
+# Install PHP extensions
+RUN apt-get update && apt-get install -y apt-utils git less libbz2-dev libc-client-dev \
+    libcurl4-gnutls-dev libicu-dev libkrb5-dev libmcrypt-dev libpng-dev \
+    libssl-dev libxml2-dev telnet unzip zip
+RUN apt-get install -y net-tools vim dnsutils
+# install cron and msmtp for outgoing email
+RUN apt-get install -y cron msmtp
+RUN docker-php-ext-configure imap --with-imap --with-imap-ssl --with-kerberos
+RUN docker-php-ext-install bz2 curl imap intl mbstring mcrypt \
+    opcache soap xmlrpc zip
+
+## set up Redis support for php
+#RUN docker-php-source extract \
+#    && curl -L -o /tmp/redis.tar.gz https://github.com/phpredis/phpredis/archive/$PHPREDIS_VERSION.tar.gz \
+#    && tar xfz /tmp/redis.tar.gz \
+#    && rm -r /tmp/redis.tar.gz \
+#    && mv phpredis-$PHPREDIS_VERSION /usr/src/php/ext/redis \
+#    && docker-php-ext-install redis \
+#    && docker-php-source delete \
+#    && 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
+
+# install GD
+RUN apt-get update && apt-get install -y \
+    libfreetype6-dev \
+    libjpeg62-turbo-dev \
+    libmcrypt-dev \
+    libpng-dev \
+    && docker-php-ext-install -j$(nproc) iconv mcrypt \
+    && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
+    && docker-php-ext-install -j$(nproc) gd
+
+# install APCU and YAML
+RUN apt-get install -y \
+    libyaml-dev unzip
+RUN pecl install yaml-2.0.0
+RUN docker-php-ext-enable yaml-2.0.0
+RUN pecl install apcu
+RUN docker-php-ext-enable apcu
+
+# clean up all Apt stuff
+RUN rm -rf /var/lib/apt/lists/*
+
+# address app-specific config requirements
+RUN echo "log_errors = on" > /usr/local/etc/php/conf.d/php.ini
+RUN echo "display_errors = off" >> /usr/local/etc/php/conf.d/php.ini
+RUN echo "always_populate_raw_post_data = -1" >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'date.timezone = "Pacific/Auckland"' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'cgi.fix_pathinfo = 0' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'sendmail_path = /usr/bin/msmtp -t' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'upload_max_filesize = 100M' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'post_max_size = 150M' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'memory_limit = 250M' >> /usr/local/etc/php/conf.d/php.ini
+# OpCache work
+RUN echo '[opcache]' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'opcache.enable = 1' >> /usr/local/etc/php/conf.d/php.ini
+#RUN echo 'opcache.enable_cli = 1' >> /usr/local/etc/php/conf.d/php.ini
+#RUN echo 'opcache.interned_strings_buffer = 8' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'opcache.memory_consumption = 128' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'opcache.max_accelerated_files = 8000' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'opcache.revalidate_freq = 60' >> /usr/local/etc/php/conf.d/php.ini
+#RUN echo 'opcache.fast_shutdown = 1' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'opcache.use_cwd = 1' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'opcache.validate_timestamps = 1' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'opcache.save_comments = 1' >> /usr/local/etc/php/conf.d/php.ini
+RUN echo 'opcache.enable_file_override = 0' >> /usr/local/etc/php/conf.d/php.ini
+
+# the PHP-fpm configuration
+RUN echo 'security.limit_extensions = .php' >> /usr/local/etc/php-fpm.d/www.conf
+RUN echo 'catch_workers_output = yes' >> /usr/local/etc/php-fpm.d/www.conf
+RUN echo 'php_flag[display_errors] = off' >> /usr/local/etc/php-fpm.d/www.conf
+RUN echo 'php_admin_value[error_log] = /usr/local/var/log/fpm-php.www.log' >> /usr/local/etc/php-fpm.d/www.conf
+RUN echo 'php_admin_flag[log_errors] = on' >> /usr/local/etc/php-fpm.d/www.conf
+RUN echo 'php_admin_value[memory_limit] = 250M' >> /usr/local/etc/php-fpm.d/www.conf
+
+VOLUME /var/www/html
+
+# Copy init scripts and custom .htaccess
+COPY docker-entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["php-fpm"]

docker-compose.yml

+version: "2"
+
+services:
+    app:
+        image: kiwilightweight/grav
+        ports:
+            - 127.0.0.1:9002:9000
+        volumes:
+            - /home/dave/Projects/grav/test:/var/www/html
+        restart:
+            unless-stopped

docker-entrypoint.sh

+#!/bin/bash
+
+set -e
+
+# run composer to set up dependencies if not already there...
+if ! [ -e vendor/autoload.php ]; then
+    echo >&2 "installing dependencies with Composer"
+    if ! [ -e /usr/local/bin/composer ]; then
+        echo >&2 "first getting Composer"
+        # Get Composer
+        curl -S https://getcomposer.org/installer | php
+        chmod a+x composer.phar
+        mv composer.phar /usr/local/bin/composer
+    fi
+    if ! [ -e .git/hooks ]; then
+        echo >&2 "creating a .git/hooks dir to avoid errors"
+        mkdir -p .git/hooks
+    fi
+    composer install
+else
+    echo >&2 "vendor dependencies already in place."
+fi
+
+exec "$@"

nginx.conf

+server {
+    listen 80;
+    index index.html index.php;
+
+    ## Web root and Domain Name
+    root /home/dave/Projects/grav/test;
+    server_name grav.local;
+
+    ## Begin - Index
+    # for subfolders, simply adjust the rewrite:
+    # to use `/subfolder/index.php`
+    location / {
+        try_files $uri $uri/ /index.php?$query_string;
+    }
+    ## End - Index
+
+    ## Begin - PHP-FPM Configuration
+    location ~ \.php$ {
+        # Choose either a socket or TCP/IP address
+        fastcgi_pass 127.0.0.1:9002;
+
+        fastcgi_split_path_info ^(.+\.php)(/.+)$;
+        fastcgi_index index.php;
+        include fastcgi_params;
+        fastcgi_param SCRIPT_FILENAME $document_root/$fastcgi_script_name;
+    }
+    ## End - PHP
+
+    ## Begin - Security
+    # deny all direct access for these folders
+    location ~* /(.git|cache|bin|logs|backups)/.*$ { return 403; }
+    # deny running scripts inside core system folders
+    location ~* /(system|vendor)/.*\.(txt|xml|md|html|yaml|php|pl|py|cgi|twig|sh|bat)$ { return 403; }
+    # deny running scripts inside user folder
+    location ~* /user/.*\.(txt|md|yaml|php|pl|py|cgi|twig|sh|bat)$ { return 403; }
+    # deny access to specific files in the root folder
+    location ~ /(LICENSE|composer.lock|composer.json|nginx.conf|web.config|htaccess.txt|\.htaccess) { return 403; }
+    ## End - Security
+ }