copyedits, rewrite
fixed some links
simplified/shortened this topic
tweaked description of key, option, value
Signed-off-by: Victoria Bialas <victoria.bialas@docker.com>
Word Swarm has been used here for the first time, and one line introduction, to what swarm is, would be very beneficial in helping to decide where to begin with.
This is the same issue as the page "Try it out and vote". I have updated the consistency of format to be the same through all pages. (and I hope I do not overdo these small things, but I just like the ease of proposing changes to the documentation and I hope that it is getting better this way)
On the "Sample app overview" page all blocks of IP address and port are shown as <manager-IP>:5000 or <manager-IP>:5001.
On this page "Try it out and vote" I see some inconsistency of these forms and fixed them, because I think the style format must be in the form "<manager-IP>:5000", e.g., colon after character ">".
At the current time, Docker flushes any pre-existing DOCKER and DOCKER-ISOLATION chains, meaning that the previous advice was misleading and led users in the wrong direction regarding restricting access to containers via iptables.
"(indicated by the stretch suffix on the version, in this example)"
The example uses jessie, not stretch.
"change the word stable in the > URL to edge"
I do not know why this character ">" appeared, maybe it is a mistake and I have removed it?
* Update step_six.md
I need to add the -f option to remove image, otherwise: Error response from daemon: conflict: unable to delete e867bc17a0bb (must be forced) - image is referenced in multiple repositories
* Fix for image remove command
```bash
sudo nano /etc/docker/daemon.json
```
Here a $ sign is missing and the command in the web site appears as "bash sudo nano /etc/docker/daemon.json", which is not correct. It shoud look like: "$ sudo nano /etc/docker/daemon.json".
"which is 2375 if you do not use TLS, and 2376 if you do."
On all other lines the ports are in backquotes, so I have added backquotes here also.
"In this case, steps 3 and 4."
Missing verb like "repeat", I have added it.
Oracle Linux never shipped the upstream (RHEL) Docker packages but did ship `docker-engine-selinux` which would need to be removed.
Though, given the new Docker EE/CE naming convention, yum would just replace any existing `docker-engine` and `docker-engine-selinux` packages anyway.