diff --git a/dockerfiles/rubygems/Dockerfile b/dockerfiles/rubygems/Dockerfile
index 6d13878..7335211 100644
--- a/dockerfiles/rubygems/Dockerfile
+++ b/dockerfiles/rubygems/Dockerfile
@@ -1,4 +1,4 @@
 FROM cybercode/alpine-ruby:2.3
 RUN gem install rubygems-mirror
 ENV BUSYBOX=1
-volume /data
+ENV HOME=/tmp
diff --git a/mysql.sh b/mysql.sh
index 48d07af..d42c1fd 100755
--- a/mysql.sh
+++ b/mysql.sh
@@ -9,7 +9,7 @@ _here=`dirname $(realpath $0)`
 [ -z "${LOADED_APT_DOWNLOAD}" ] && (echo "failed to load apt-download"; exit 1)
 
 BASE_PATH="${TUNASYNC_WORKING_DIR}"
-BASE_URL=${TUNASYNC_UPSTREAM_URL:-"https://repo.mysql.com"}
+BASE_URL="${TUNASYNC_UPSTREAM_URL:-"https://repo.mysql.com"}"
 
 MYSQL_DOWNLOAD_PATH="${BASE_PATH}/downloads/"
 MYSQL_RSYNC_UPSTREAM="rsync://mysql.he.net/mysql/Downloads/"