deployment/dev improvements; add Dockerfile

Dockerfile

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+FROM php:7.2-apache
+
+COPY www/ /var/www/html/
+RUN rm -f /var/www/html/pile.db
+COPY opt/ /opt/pile
+RUN mkdir -p /var/tmp/pile
+COPY db_versions/ /var/tmp/pile/db_versions
+
+RUN apt-get update && apt-get -y install sqlite3 wget \
+        libfreetype6-dev \
+        libjpeg62-turbo-dev \
+        libpng-dev
+
+RUN docker-php-ext-install -j$(nproc) iconv \
+    && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
+    && docker-php-ext-install -j$(nproc) gd
+
+RUN cd /opt/pile/ && /opt/pile/install_composer.sh
+RUN cd /var/www/html && /opt/pile/composer.phar install
+
+RUN /var/tmp/pile/db_versions/apply_all.sh /var/www/html/pile.db

db_versions/apply_all.sh

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+#!/bin/bash
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+if [ -z "$1" ]; then
+	echo "Please specify database file."
+	exit -1
+fi
+
+if ! which sqlite3; then
+	echo "Couldn't find \`sqlite3\` in \$PATH!"
+	exit -1
+fi
+
+set -e
+FILES=$(ls ${DIR}/*.sql|sort)
+for sql_file in $FILES;do
+	echo "Processing \"${sql_file}\"..."
+	sqlite3 -echo "$1" < "$sql_file"
+done
+
+echo "Done."

opt/install_composer.sh

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+#!/bin/sh
+
+EXPECTED_SIGNATURE="$(wget -q -O - https://composer.github.io/installer.sig)"
+php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
+ACTUAL_SIGNATURE="$(php -r "echo hash_file('sha384', 'composer-setup.php');")"
+
+if [ "$EXPECTED_SIGNATURE" != "$ACTUAL_SIGNATURE" ]
+then
+    >&2 echo 'ERROR: Invalid installer signature'
+    rm composer-setup.php
+    exit 1
+fi
+
+php composer-setup.php --quiet
+RESULT=$?
+rm composer-setup.php
+exit $RESULT