Install pdo_pgsql extension

php/Dockerfile

@@ -5,9 +5,12 @@ MAINTAINER Mahmoud Zalt <mahmoud@zalt.me>
 ADD ./laravel.ini /usr/local/etc/php/conf.d
 ADD ./laravel.pool.conf /usr/local/etc/php-fpm.d/
 
+RUN apt-get update && apt-get install libpq-dev -y
+
 # Install extensions using the helper script provided by the base image
 RUN docker-php-ext-install \
-    pdo_mysql
+    pdo_mysql \
+    pdo_pgsql
 
 RUN usermod -u 1000 www-data