Change gpg check

Author: dobrerazvan

docker/kafka/Dockerfile

@@ -13,9 +13,8 @@ WORKDIR /var/tmp
 
 RUN wget -q $kafka_distro_base_url/$kafka_version/$kafka_distro
 RUN wget -q $kafka_distro_base_url/$kafka_version/$kafka_distro_asc
-RUN wget -q $kafka_distro_base_url/KEYS
 
-RUN gpg --import KEYS
+RUN gpg --keyserver pgpkeys.mit.edu --recv-key DE885DD3
 RUN gpg --verify $kafka_distro_asc $kafka_distro
 
 RUN tar -xzf $kafka_distro