Add `--dns-option` to `docker run` and hide `--dns-opt`

This fix is a follow up to #27567 based on:
https://github.com/docker/docker/pull/27567#issuecomment-259295055

In #27567, `--dns-options` has been added to `service create/update`,
together with `--dns` and `--dns-search`. The `--dns-opt` was used
in `docker run`.

This fix add `--dns-option` (not `--dns-options`) to `docker run/create`, and hide
`--dns-opt`. It is still possible to use `--dns-opt` with
`docker run/create`, though it will not show up in help output.

This fix change `--dns-options`to --dns-option` for `docker service create`
and `docker service update`.

This fix also updates the docs and bash/zsh completion scripts.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

contrib/completion/bash/docker

@@ -1248,7 +1248,7 @@ _docker_container_run() {
 		--device-write-bps
 		--device-write-iops
 		--dns
-		--dns-opt
+		--dns-option
 		--dns-search
 		--entrypoint
 		--env -e

contrib/completion/zsh/_docker

@@ -531,7 +531,7 @@ __docker_container_subcommand() {
         "($help)*--device-write-iops=[Limit the write rate (IO per second) to a device]:device:IO rate: "
         "($help)--disable-content-trust[Skip image verification]"
         "($help)*--dns=[Custom DNS servers]:DNS server: "
-        "($help)*--dns-opt=[Custom DNS options]:DNS option: "
+        "($help)*--dns-option=[Custom DNS options]:DNS option: "
         "($help)*--dns-search=[Custom DNS search domains]:DNS domains: "
         "($help)*"{-e=,--env=}"[Environment variables]:environment variable: "
         "($help)--entrypoint=[Overwrite the default entrypoint of the image]:entry point: "

docs/reference/commandline/create.md

@@ -50,7 +50,7 @@ Options:
       --device-write-iops value     Limit write rate (IO per second) to a device (default [])
       --disable-content-trust       Skip image verification (default true)
       --dns value                   Set custom DNS servers (default [])
-      --dns-opt value               Set DNS options (default [])
+      --dns-option value            Set DNS options (default [])
       --dns-search value            Set custom DNS search domains (default [])
       --entrypoint string           Overwrite the default ENTRYPOINT of the image
   -e, --env value                   Set environment variables (default [])

docs/reference/commandline/run.md

@@ -54,7 +54,7 @@ Options:
       --device-write-iops value     Limit write rate (IO per second) to a device (default [])
       --disable-content-trust       Skip image verification (default true)
       --dns value                   Set custom DNS servers (default [])
-      --dns-opt value               Set DNS options (default [])
+      --dns-option value            Set DNS options (default [])
       --dns-search value            Set custom DNS search domains (default [])
       --entrypoint string           Overwrite the default ENTRYPOINT of the image
   -e, --env value                   Set environment variables (default [])

docs/reference/commandline/service_create.md

@@ -24,7 +24,7 @@ Options:
       --constraint list                  Placement constraints (default [])
       --container-label list             Container labels (default [])
       --dns list                         Set custom DNS servers (default [])
-      --dns-options list                 Set DNS options (default [])
+      --dns-option list                  Set DNS options (default [])
       --dns-search list                  Set custom DNS search domains (default [])
       --endpoint-mode string             Endpoint mode (vip or dnsrr)
   -e, --env list                         Set environment variables (default [])

docs/reference/commandline/service_update.md

@@ -26,12 +26,12 @@ Options:
       --constraint-rm list               Remove a constraint (default [])
       --container-label-add list         Add or update a container label (default [])
       --container-label-rm list          Remove a container label by its key (default [])
-      --dns-add list                     Add or update custom DNS servers (default [])
-      --dns-options-add list             Add or update DNS options (default [])
-      --dns-options-rm list              Remove DNS options (default [])
-      --dns-rm list                      Remove custom DNS servers (default [])
-      --dns-search-add list              Add or update custom DNS search domains (default [])
-      --dns-search-rm list               Remove DNS search domains (default [])
+      --dns-add list                     Add or update a custom DNS server (default [])
+      --dns-option-add list              Add or update a DNS option (default [])
+      --dns-option-rm list               Remove a DNS option (default [])
+      --dns-rm list                      Remove a custom DNS server (default [])
+      --dns-search-add list              Add or update a custom DNS search domain (default [])
+      --dns-search-rm list               Remove a DNS search domain (default [])
       --endpoint-mode string             Endpoint mode (vip or dnsrr)
       --env-add list                     Add or update an environment variable (default [])
       --env-rm list                      Remove an environment variable (default [])

docs/reference/run.md

@@ -388,7 +388,7 @@ network mode a container has its own UTS namespace by default. As such
 `--hostname` is allowed in `host` network mode and will only change the
 hostname inside the container.
 Similar to `--hostname`, the `--add-host`, `--dns`, `--dns-search`, and
-`--dns-opt` options can be used in `host` network mode. These options update
+`--dns-option` options can be used in `host` network mode. These options update
 `/etc/hosts` or `/etc/resolv.conf` inside the container. No change are made to
 `/etc/hosts` and `/etc/resolv.conf` on the host.
 
@@ -407,7 +407,7 @@ or a High Performance Web Server.
 With the network set to `container` a container will share the
 network stack of another container.  The other container's name must be
 provided in the format of `--network container:<name|id>`. Note that `--add-host`
-`--hostname` `--dns` `--dns-search` `--dns-opt` and `--mac-address` are
+`--hostname` `--dns` `--dns-search` `--dns-option` and `--mac-address` are
 invalid in `container` netmode, and `--publish` `--publish-all` `--expose` are
 also invalid in `container` netmode.
 

man/docker-create.1.md

@@ -31,7 +31,7 @@ docker-create - Create a new container
 [**--device-write-iops**[=*[]*]]
 [**--dns**[=*[]*]]
 [**--dns-search**[=*[]*]]
-[**--dns-opt**[=*[]*]]
+[**--dns-option**[=*[]*]]
 [**-e**|**--env**[=*[]*]]
 [**--entrypoint**[=*ENTRYPOINT*]]
 [**--env-file**[=*[]*]]
@@ -190,7 +190,7 @@ two memory nodes.
 **--dns**=[]
    Set custom DNS servers
 
-**--dns-opt**=[]
+**--dns-option**=[]
    Set custom DNS options
 
 **--dns-search**=[]

man/docker-run.1.md

@@ -32,7 +32,7 @@ docker-run - Run a command in a new container
 [**--device-write-bps**[=*[]*]]
 [**--device-write-iops**[=*[]*]]
 [**--dns**[=*[]*]]
-[**--dns-opt**[=*[]*]]
+[**--dns-option**[=*[]*]]
 [**--dns-search**[=*[]*]]
 [**-e**|**--env**[=*[]*]]
 [**--entrypoint**[=*ENTRYPOINT*]]
@@ -260,7 +260,7 @@ See **config-json(5)** for documentation on using a configuration file.
 **--dns-search**=[]
    Set custom DNS search domains (Use --dns-search=. if you don't wish to set the search domain)
 
-**--dns-opt**=[]
+**--dns-option**=[]
    Set custom DNS options
 
 **--dns**=[]