Add Docker infrastructure for dev and prod environments

- Separate PHP Dockerfiles (dev/prod) with extensions and prod opcache/php.ini optimization
- docker-compose-dev: PHP, PostgreSQL, Redis, Messenger, Mailpit, RedisInsight
- docker-compose-prod: 2x PHP replicas, PgSQL master/slave with PgBouncer, 2x Messenger, Redis
- Makefile with build/start/stop/purge commands
- AGENT.md to restrict AI access to the repository

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker/php/dev/Dockerfile

@@ -0,0 +1,28 @@
+FROM php:8.4-fpm
+
+RUN apt-get update && apt-get install -y \
+    libpq-dev \
+    libsqlite3-dev \
+    libzip-dev \
+    libxml2-dev \
+    libicu-dev \
+    libpng-dev \
+    libjpeg-dev \
+    libfreetype6-dev \
+    libmagickwand-dev \
+    unzip \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN docker-php-ext-configure gd --with-freetype --with-jpeg \
+    && docker-php-ext-install \
+    pdo_mysql \
+    pdo_pgsql \
+    pdo_sqlite \
+    zip \
+    xml \
+    intl \
+    mbstring \
+    gd
+
+RUN pecl install redis imagick \
+    && docker-php-ext-enable redis imagick

docker/php/prod/Dockerfile

@@ -0,0 +1,32 @@
+FROM php:8.4-fpm
+
+RUN apt-get update && apt-get install -y \
+    libpq-dev \
+    libsqlite3-dev \
+    libzip-dev \
+    libxml2-dev \
+    libicu-dev \
+    libpng-dev \
+    libjpeg-dev \
+    libfreetype6-dev \
+    libmagickwand-dev \
+    unzip \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN docker-php-ext-configure gd --with-freetype --with-jpeg \
+    && docker-php-ext-install \
+    pdo_mysql \
+    pdo_pgsql \
+    pdo_sqlite \
+    zip \
+    xml \
+    intl \
+    mbstring \
+    gd \
+    opcache
+
+RUN pecl install redis imagick \
+    && docker-php-ext-enable redis imagick
+
+COPY php.ini /usr/local/etc/php/conf.d/app.ini
+COPY opcache.ini /usr/local/etc/php/conf.d/opcache.ini

docker/php/prod/opcache.ini

@@ -0,0 +1,9 @@
+opcache.enable=1
+opcache.memory_consumption=256
+opcache.interned_strings_buffer=16
+opcache.max_accelerated_files=20000
+opcache.validate_timestamps=0
+opcache.save_comments=0
+opcache.enable_cli=1
+opcache.jit=tracing
+opcache.jit_buffer_size=128M

docker/php/prod/php.ini

@@ -0,0 +1,21 @@
+date.timezone = Europe/Paris
+
+memory_limit = 256M
+upload_max_filesize = 100M
+post_max_size = 150M
+max_execution_time = 30
+max_input_time = 30
+
+expose_php = Off
+display_errors = Off
+display_startup_errors = Off
+log_errors = On
+error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
+
+realpath_cache_size = 4096K
+realpath_cache_ttl = 600
+
+session.cookie_secure = On
+session.cookie_httponly = On
+session.cookie_samesite = Lax
+session.use_strict_mode = 1