diff --git a/Dockerfile b/Dockerfile
index 8abf067..70d4074 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.6
+FROM alpine:3.8
 
 ARG BUILD_DATE
 ARG VCS_REF
@@ -18,18 +18,20 @@ RUN set -e \
   patch \
   php7 \
   php7-apcu \
+  php7-curl \
   php7-ctype \
   php7-json \
   php7-mbstring \
   php7-opcache \
   php7-openssl \
+  php7-pdo_mysql \
   php7-phar \
   php7-simplexml \
   php7-tokenizer \
   php7-xmlwriter \
   php7-zlib \
   && curl -sS https://getcomposer.org/installer | php -- --filename=composer --install-dir=/usr/bin \
-  && composer global require drupal/coder --update-no-dev --no-suggest --prefer-dist ^8.2 \
+  && composer global require drupal/coder --update-no-dev --no-suggest --prefer-dist ~8.2.10 \
   && ln -s /root/.composer/vendor/bin/phpcs /usr/bin/phpcs \
   && ln -s /root/.composer/vendor/bin/phpcbf /usr/bin/phpcbf \
   && ln -s /root/.composer/vendor/drupal/coder/coder_sniffer/Drupal /root/.composer/vendor/squizlabs/php_codesniffer/CodeSniffer/Standards/Drupal \
@@ -38,7 +40,6 @@ RUN set -e \
   && git clone --branch master https://git.drupal.org/sandbox/coltrane/1921926.git /root/drupalsecure_code_sniffs \
   && rm -rf /root/drupalsecure_code_sniffs/.git \
   && cd /root/drupalsecure_code_sniffs && curl https://www.drupal.org/files/issues/parenthesis_closer_notice-2320623-2.patch | git apply && cd \
-  && apk del --no-cache git \
   && rm -rf /root/.composer/cache/* \
   && ln -s /root/drupalsecure_code_sniffs/DrupalSecure /root/.composer/vendor/squizlabs/php_codesniffer/CodeSniffer/Standards/DrupalSecure \
   && sed -i "s/.*memory_limit = .*/memory_limit = -1/" /etc/php7/php.ini