diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fc4bd21..da13e07 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,7 +5,7 @@ stages:
 - build
 
 variables:
-  BRANCH: plus
+  BRANCH: ext
   VERSION: 7.1-fpm-${BRANCH}
   CACHETAG: build-${BRANCH}
   DOCKER_REGISTRY: registry.leenooks.net
@@ -39,4 +39,4 @@ build:
   tags:
   - docker
   only:
-  - plus
+  - ext
diff --git a/Dockerfile b/Dockerfile
index d6e718e..49f05fa 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,10 @@
 # NAME leenooks/php
-# VERSION 7.1-fpm-plus
+# VERSION 7.1-fpm-ext
 
-FROM registry.leenooks.net/leenooks/php:7.1-fpm-mysql
+FROM registry.leenooks.net/leenooks/php:7.1-fpm-plus
 
-RUN apt-get update \
-	&& apt-get install -y libbz2-dev libgmp-dev libpng-dev libjpeg-dev libfreetype6-dev libmagickwand-dev --no-install-recommends \
-	&& docker-php-ext-configure gd --with-freetype-dir=/usr/include/freetype2 --with-jpeg-dir=/usr/include/ \
-	&& docker-php-ext-install -j$(nproc) bz2 gettext sockets gmp gd pcntl exif \
-	&& pecl install imagick && docker-php-ext-enable imagick \
+RUN echo "deb http://deb.debian.org/debian jessie non-free" >> /etc/apt/sources.list.d/non-free.list && apt-get update \
+	&& apt-get install -y pkg-config libsnmp-dev snmp-mibs-downloader --no-install-recommends \
+	&& download-mibs \
+	&& docker-php-ext-install -j$(nproc) snmp \
 	&& rm -rf /var/lib/apt/lists/* /tmp/*