diff --git a/data/Dockerfiles/php-fpm/Dockerfile b/data/Dockerfiles/php-fpm/Dockerfile
index 0d65040f..cef46c4e 100644
--- a/data/Dockerfiles/php-fpm/Dockerfile
+++ b/data/Dockerfiles/php-fpm/Dockerfile
@@ -1,24 +1,15 @@
-FROM php:7.1-fpm
+FROM php:7.1-fpm-alpine
 LABEL maintainer "Andre Peters <andre.peters@servercow.de>"
 
 ARG DEBIAN_FRONTEND=noninteractive
 
-RUN apt-get update && apt-get install -y \
-	g++ \
-	libicu-dev \
-	libidn11-dev \
-	libxml2-dev \
-	mysql-client \
-	redis-tools \
-	zlib1g-dev \
-	&& rm -rf /var/lib/apt/lists/*
-
+RUN apk add -U --no-cache libxml2-dev icu-dev redis mysql-client bash autoconf g++ make
+RUN pecl install redis && pecl clear-cache
 RUN docker-php-ext-configure intl
 RUN docker-php-ext-install intl pdo pdo_mysql xmlrpc
+RUN docker-php-ext-enable redis
 RUN pear install channel://pear.php.net/Net_IDNA2-0.1.1 Auth_SASL Net_IMAP NET_SMTP Net_IDNA2 Mail_mime
-RUN pecl install -o -f redis \
-	&& rm -rf /tmp/pear \
-	&& docker-php-ext-enable redis
+RUN apk del autoconf g++ make libxml2-dev
 
 COPY ./docker-entrypoint.sh /
 
diff --git a/data/Dockerfiles/php-fpm/docker-entrypoint.sh b/data/Dockerfiles/php-fpm/docker-entrypoint.sh
index 1e4d3fe6..2c73abfc 100755
--- a/data/Dockerfiles/php-fpm/docker-entrypoint.sh
+++ b/data/Dockerfiles/php-fpm/docker-entrypoint.sh
@@ -50,7 +50,7 @@ fi
 for file in $(ls /data/dkim/keys/); do
   domain=${file%.dkim}
   if [[ -f /data/dkim/txt/${file} ]]; then
-    redis-cli -h redis-mailcow HSET DKIM_PUB_KEYS "${domain}" "$(cat /data/dkim/keys/${domain})"
+    redis-cli -h redis-mailcow HSET DKIM_PUB_KEYS "${domain}" "$(cat /data/dkim/txt/${file})"
     redis-cli -h redis-mailcow HSET DKIM_PRIV_KEYS "${domain}" "$(cat /data/dkim/keys/${file})"
     redis-cli -h redis-mailcow HSET DKIM_SELECTORS "${domain}" "dkim.${domain}"
   fi