Updated Docker (markdown)

Docker.md

@@ -7,11 +7,10 @@ Start by getting Docker installed and working on your operating system of choice
 * [Docker on FreeBSD](https://wiki.freebsd.org/Docker)
 
 ## Pick Release or Nightly
+Docker containers are intended to be static, they shouldn't self update internally. If you want to use stable releases, you want one that tracks releases. If you'd rather run the latest and greatest, the nightly is the right choice. Each of their docker pages has good setup and usage instructions, follow them.
 * Release: [linuxserver/radarr](https://hub.docker.com/r/linuxserver/radarr/)
 * Nightly: [hotio/radarr](https://hub.docker.com/r/hotio/radarr/)
 
-Follow the directions on their site to get everything setup and working.
-
 # Using systemd
 Using your favorite editor, create `/etc/systemd/system/docker-radarr.service` with the following systemd unit file. Be sure to replace `TIMEZONE` and `LOCALPATH` with the correct values.