@@ -33,15 +33,19 @@ If you want Docker to start at boot, you should also:

 There are a number of ways to configure the daemon flags and environment variables

 for your Docker daemon.

-The recommended way is to use a systemd drop-in file. These are local files in

-the `/etc/systemd/system/docker.service.d` directory. This could also be

-`/etc/systemd/system/docker.service`, which also works for overriding the

-defaults from `/lib/systemd/system/docker.service`.

-

-However, if you had previously used a package which had an `EnvironmentFile`

-(often pointing to `/etc/sysconfig/docker`) then for backwards compatibility,

-you drop a file in the `/etc/systemd/system/docker.service.d`

-directory including the following:

+The recommended way is to use a systemd drop-in file (as described in

+the <a target="_blank"

+href="https://www.freedesktop.org/software/systemd/man/systemd.unit.html">systemd.unit</a>

+documentation). These are local files named `<something>.conf` in the

+`/etc/systemd/system/docker.service.d` directory. This could also be

+`/etc/systemd/system/docker.service`, which also works for overriding

+the defaults from `/lib/systemd/system/docker.service`.

+

+However, if you had previously used a package which had an

+`EnvironmentFile` (often pointing to `/etc/sysconfig/docker`) then for

+backwards compatibility, you drop a file with a `.conf` extension into

+the `/etc/systemd/system/docker.service.d` directory including the

+following:

     [Service]

     EnvironmentFile=-/etc/sysconfig/docker