Merge pull request elisiano#2 from HacKanCuBa/patch-1

Fix Dockerfile

Author: elisiano

Dockerfile

@@ -86,7 +86,7 @@ RUN GPG_KEYS=B0F4253373F8F6F510D42178520A9993A1C052F8 \
 	&& curl -fSL http://nginx.org/download/nginx-$NGINX_VERSION.tar.gz -o nginx.tar.gz \
 	&& curl -fSL http://nginx.org/download/nginx-$NGINX_VERSION.tar.gz.asc  -o nginx.tar.gz.asc \
 	&& export GNUPGHOME="$(mktemp -d)" \
-	&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$GPG_KEYS" \
+	&& gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys "$GPG_KEYS" \
 	&& gpg --batch --verify nginx.tar.gz.asc nginx.tar.gz \
 	&& rm -r "$GNUPGHOME" nginx.tar.gz.asc \
 	&& mkdir -p /usr/src \