fix cron

Procfile

@@ -1,4 +1,4 @@
 dockergen: docker-gen -watch -notify "/app/updatessl.sh updatessl" /app/nginx.tmpl /etc/nginx/conf.d/default.conf
 nginx: nginx
-cron: cron
+cron: cron && tail -f /dev/null
 

updatessl.sh

@@ -19,8 +19,8 @@ updatessl() {
       $ACME_BIN --issue \
       -d $d_list \
       --nginx \
-      --fullchain-file "$CERTS\$d.crt" \
-      --key-file "$CERTS\$d.crt" \
+      --fullchain-file "$CERTS/$d.crt" \
+      --key-file "$CERTS/$d.key" \
       --reloadcmd "service nginx configtest && service force-reload"
     done