add missing packages

Dockerfile

@@ -5,8 +5,9 @@ MAINTAINER Andrey Arapov <andrey.arapov@nixaid.com>
 
 # Install the dependencies
 RUN apk update && \
-    apk add wget unzip gnupg1 nginx php-fpm \
-            php-curl php-json php-dom php-zlib php-iconv php-openssl
+    apk add tzdata wget unzip gnupg1 nginx php-fpm \
+            php-curl php-json php-dom php-zlib php-iconv php-openssl \
+            php-pdo_sqlite php-pdo_mysql php-pdo_pgsql
 
 # Create the application user so that PHP-FPM can run
 ENV USER rainloop