diff --git a/Dockerfile b/Dockerfile
index 949dd54..5cef839 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,14 +1,13 @@
 FROM php:7.3-apache
 RUN apt-get update
-RUN apt-get install -y libicu-dev xz-utils git zlib1g-dev python libgmp-dev gettext libzip-dev
+RUN apt-get install -y libicu-dev xz-utils git zlib1g-dev python libgmp-dev libzip-dev
 RUN docker-php-ext-install mbstring
 RUN docker-php-ext-install intl
 RUN docker-php-ext-install zip
 RUN docker-php-ext-install gmp
-RUN docker-php-ext-install gettext
 RUN a2enmod rewrite
 RUN curl -sS https://getcomposer.org/installer | php
 COPY resources/php.ini /usr/local/etc/php/
 COPY . /var/www/html/
-RUN php composer.phar install --prefer-dist --no-progress
+RUN php composer.phar install --prefer-dist --no-progress --no-dev --optimize-autoloader
 ENV CONVERT=1