DONE: add docker config setup for local docker development

docker/php/entrypoint.sh

@@ -0,0 +1,35 @@
+#!/bin/sh
+set -e
+
+cd /var/www/html
+
+if [ ! -f .env ] && [ -f .env.docker.example ]; then
+  cp .env.docker.example .env
+fi
+
+if [ -f composer.json ]; then
+  if [ -f vendor/autoload.php ] && [ "${USE_STAGING_ENV:-false}" = "true" ]; then
+    : # vendor is baked into the staging image
+  elif [ "${USE_STAGING_ENV:-false}" = "true" ]; then
+    composer install --no-interaction --prefer-dist --no-dev --optimize-autoloader --no-scripts
+  else
+    composer install --no-interaction --prefer-dist --no-scripts
+  fi
+  php artisan package:discover --ansi || true
+fi
+
+mkdir -p \
+  storage/logs \
+  storage/framework/cache/data \
+  storage/framework/views \
+  storage/framework/sessions \
+  storage/app/public \
+  bootstrap/cache
+
+chown -R www-data:www-data storage bootstrap/cache 2>/dev/null || true
+
+if [ -f .env ] && ! grep -qE '^APP_KEY=.+' .env; then
+  php artisan key:generate --force --ansi || true
+fi
+
+exec docker-php-entrypoint "$@"