fix type of keywords entry in frontmatter (in /swarm/ dir and search.md and release-notes.md) (#515)

keywords should be a string, not an array containing one string

Signed-off-by: Gaetan de Villele <gdevillele@gmail.com>

release-notes.md

@@ -1,7 +1,6 @@
 ---
 description: Release notes for Docker
-keywords:
+keywords: docker, documentation, about, technology, understanding,  release
-- docker, documentation, about, technology, understanding,  release
 title: Docker Release Notes
 ---
 
@@ -18,4 +17,4 @@ target="_blank">Docker Machine</a>
 * <a href="https://github.com/docker/compose/blob/master/CHANGELOG.md"
 target="_blank">Docker Compose</a>
 * <a href="https://github.com/docker/swarm/blob/master/CHANGELOG.md"
-target="_blank">Docker Swarm</a>
+target="_blank">Docker Swarm</a>

search.md

@@ -1,10 +1,9 @@
 ---
 description: Docker documentation search results
-keywords:
+keywords: Search, Docker, documentation, manual, guide, reference, api
-- Search, Docker, documentation, manual, guide, reference, api
+noratings: true
 notoc: true
 title: Search results
-noratings: true
 ---
 
 <style type='text/css'>
@@ -34,4 +33,4 @@ noratings: true
   })();
 </script>
 <gcse:search></gcse:search>
-</div>
+</div>

swarm/configure-tls.md

@@ -1,7 +1,6 @@
 ---
 description: Swarm and transport layer security
-keywords:
+keywords: docker, swarm, TLS, discovery, security,  certificates
-- docker, swarm, TLS, discovery, security,  certificates
 title: Configure Docker Swarm for TLS
 ---
 
@@ -540,4 +539,4 @@ Congratulations! You have configured a Docker Swarm cluster to use TLS.
 ## Related Information
 
 * [Secure Docker Swarm with TLS](secure-swarm-tls.md)
-* [Docker security](/engine/security/security/)
+* [Docker security](/engine/security/security/)

swarm/discovery.md

@@ -1,7 +1,6 @@
 ---
 description: Swarm discovery
-keywords:
+keywords: docker, swarm, clustering,  discovery
-- docker, swarm, clustering,  discovery
 title: Docker Swarm discovery
 ---
 
@@ -216,4 +215,4 @@ github.com/docker/docker/pkg/discovery</a>.
 - [Docker Swarm overview](index.md)
 - [Scheduler strategies](scheduler/strategy.md)
 - [Scheduler filters](scheduler/filter.md)
-- [Swarm API](swarm-api.md)
+- [Swarm API](swarm-api.md)

swarm/get-swarm.md

@@ -1,7 +1,6 @@
 ---
 description: Running a Swarm container on Docker Engine. Run a Swarm binary on the host OS without Docker Engine.
-keywords:
+keywords: docker, Swarm, container, binary, clustering, install, installation
-- docker, Swarm, container, binary, clustering, install, installation
 title: Get Docker Swarm
 ---
 
@@ -117,4 +116,4 @@ software tools, such as Docker Engine CLI at the node level.
 ## Related information
 
 * [Docker Swarm official image](https://hub.docker.com/_/swarm/) repository on Docker Hub
-* [Provision a Swarm with Docker Machine](provision-with-machine.md)
+* [Provision a Swarm with Docker Machine](provision-with-machine.md)

swarm/index.md

@@ -1,7 +1,6 @@
 ---
 description: 'Swarm: a Docker-native clustering system'
-keywords:
+keywords: docker, swarm,  clustering
-- docker, swarm,  clustering
 title: Docker Swarm
 ---
 
@@ -18,4 +17,4 @@ title: Docker Swarm
 * [Swarm and container networks](networking.md)
 * [Advanced Scheduling](scheduler/index.md)
 * [Provision a Swarm cluster with Docker Machine](provision-with-machine.md)
-* [Docker Swarm API](swarm-api.md)
+* [Docker Swarm API](swarm-api.md)

swarm/install-manual.md

@@ -1,7 +1,6 @@
 ---
 description: Deploying Swarm on AWS EC2 AMI's in a VPC
-keywords:
+keywords: docker, swarm, clustering, examples, Amazon, AWS EC2
-- docker, swarm, clustering, examples, Amazon, AWS EC2
 title: Build a Swarm cluster for production
 ---
 
@@ -300,4 +299,4 @@ They will display corresponding entries for the change in leadership.
 - [High availability in Docker Swarm](multi-manager-setup.md)
 - [Discovery](discovery.md)
 - [High-availability cluster using a trio of consul nodes](https://hub.docker.com/r/progrium/consul/)
-- [Networking](networking.md)
+- [Networking](networking.md)

swarm/install-w-machine.md

@@ -1,7 +1,6 @@
 ---
 description: Swarm release notes
-keywords:
+keywords: docker, swarm, clustering, discovery, release,  notes
-- docker, swarm, clustering, discovery, release,  notes
 menu:
   main:
     parent: workw_swarm
@@ -258,4 +257,4 @@ At this point, you've installed Docker Swarm by pulling the latest image of
 it from Docker Hub. Then, you built and ran a swarm on your local machine
 using VirtualBox. If you want, you can onto read an [overview of Docker Swarm
 features](index.md). Alternatively, you can develop a more in-depth view of Swarm by
-[manually installing Swarm](install-manual.md) on a network.
+[manually installing Swarm](install-manual.md) on a network.

swarm/multi-manager-setup.md

@@ -1,7 +1,6 @@
 ---
 description: High availability in Swarm
-keywords:
+keywords: docker, swarm,  clustering
-- docker, swarm,  clustering
 title: High availability in Docker Swarm
 ---
 
@@ -156,4 +155,4 @@ To switch the `DOCKER_HOST` to use `manager-2` as the primary, you do the follow
 
 You can use the `docker` command on any Docker Swarm primary manager or any replica.
 
-If you like, you can use custom mechanisms to always point `DOCKER_HOST` to the current primary manager. Then, you never lose contact with your Docker Swarm in the event of a failover.
+If you like, you can use custom mechanisms to always point `DOCKER_HOST` to the current primary manager. Then, you never lose contact with your Docker Swarm in the event of a failover.

swarm/networking.md

@@ -1,7 +1,6 @@
 ---
 description: Swarm and container networks
-keywords:
+keywords: docker, swarm, clustering,  networking
-- docker, swarm, clustering,  networking
 title: Swarm and container networks
 ---
 
@@ -127,4 +126,4 @@ from `node-0`.
 - [Docker Swarm overview](index.md)
 - [Scheduler strategies](scheduler/strategy.md)
 - [Scheduler filters](scheduler/filter.md)
-- [Swarm API](swarm-api.md)
+- [Swarm API](swarm-api.md)

swarm/overview.md

@@ -1,7 +1,6 @@
 ---
 description: 'Swarm: a Docker-native clustering system'
-keywords:
+keywords: docker, swarm, clustering
-- docker, swarm,  clustering
 title: Docker Swarm overview
 ---
 
@@ -74,4 +73,4 @@ like-minded individuals, we have a number of open channels for communication.
 
 * To contribute code or documentation changes: please submit a [pull request on Github](https://github.com/docker/swarm/pulls).
 
-For more information and resources, please visit the [Getting Help project page](/project/get-help/).
+For more information and resources, please visit the [Getting Help project page](/project/get-help/).

swarm/plan-for-production.md

@@ -1,7 +1,6 @@
 ---
 description: Plan for Swarm in production
-keywords:
+keywords: docker, swarm, scale, voting, application, plan
-- docker, swarm, scale, voting, application,  plan
 title: Plan for Swarm in production
 ---
 
@@ -344,4 +343,4 @@ planning, deployment, and ongoing management of your production Swarm clusters.
 * [Try Swarm at scale](swarm_at_scale/index.md)
 * [Swarm and container networks](networking.md)
 * [High availability in Docker Swarm](multi-manager-setup.md)
-* [Docker Data Center](https://www.docker.com/products/docker-datacenter)
+* [Docker Data Center](https://www.docker.com/products/docker-datacenter)

swarm/provision-with-machine.md

@@ -1,7 +1,6 @@
 ---
 description: Provision with Machine
-keywords:
+keywords: docker, Swarm, clustering, provision, Machine
-- docker, Swarm, clustering, provision, Machine
 title: Provision a Swarm cluster with Docker Machine
 ---
 
@@ -180,4 +179,4 @@ Name: swarm-manager
 * [Evaluate Swarm in a sandbox](install-w-machine.md)
 * [Build a Swarm cluster for production](install-manual.md)
 * [Swarm Discovery](discovery.md)
-* [Docker Machine](/machine) documentation
+* [Docker Machine](/machine) documentation

swarm/reference/create.md

@@ -1,7 +1,6 @@
 ---
 description: Create a Swarm manager.
-keywords:
+keywords: swarm, create
-- swarm, create
 title: create — Create a discovery token
 ---
 
@@ -16,4 +15,4 @@ Some documentation also refers to the discovery token as a *cluster_id*.
 
 > Warning: Docker Hub's hosted discovery backend is not recommended for production use. It’s intended only for testing/development.
 
-For more information and examples about this and other discovery backends, see the [Docker Swarm Discovery](../discovery.md) topic.
+For more information and examples about this and other discovery backends, see the [Docker Swarm Discovery](../discovery.md) topic.

swarm/reference/help.md

@@ -1,7 +1,6 @@
 ---
 description: Get help for Swarm commands.
-keywords:
+keywords: swarm, help
-- swarm, help
 title: help - Display information about a command
 ---
 
@@ -33,4 +32,4 @@ For example:
 
     Options:
        --timeout "10s"							timeout period
-       --discovery-opt [--discovery-opt option --discovery-opt option]	discovery options
+       --discovery-opt [--discovery-opt option --discovery-opt option]	discovery options

swarm/reference/index.md

@@ -1,7 +1,6 @@
 ---
 description: Docker Swarm Commands Overview
-keywords:
+keywords: Swarm, cluster, commands
-- Swarm, cluster, commands
 title: Swarm command-line reference
 ---
 
@@ -10,4 +9,4 @@ title: Swarm command-line reference
 -   [list](list.md) — List the nodes in a Docker cluster
 -   [manage](manage.md) — Create a Swarm manager
 -   [join](join.md) — Create a Swarm node
--   [help](help.md) — See a list of Swarm commands, or help for one command
+-   [help](help.md) — See a list of Swarm commands, or help for one command

swarm/reference/join.md

@@ -1,7 +1,6 @@
 ---
 description: Create a Swarm node.
-keywords:
+keywords: swarm, create, join
-- swarm, create, join
 title: join — Create a Swarm node
 ---
 
@@ -87,4 +86,4 @@ Use `--discovery-opt <value>` to discovery options, such as paths to the TLS fil
     --discovery-opt kv.certfile=/path/to/mycert.pem \
     --discovery-opt kv.keyfile=/path/to/mykey.pem \
 
-For more information, see [Use TLS with distributed key/value discovery](../discovery.md)
+For more information, see [Use TLS with distributed key/value discovery](../discovery.md)

swarm/reference/list.md

@@ -1,7 +1,6 @@
 ---
 description: List the nodes in a cluster.
-keywords:
+keywords: swarm, list
-- swarm, list
 title: list — List the nodes in a cluster
 ---
 
@@ -77,4 +76,4 @@ Use `--discovery-opt <value>` to discovery options, such as paths to the TLS fil
     --discovery-opt kv.certfile=/path/to/mycert.pem \
     --discovery-opt kv.keyfile=/path/to/mykey.pem \
 
-For more information, see [Use TLS with distributed key/value discovery](../discovery.md)
+For more information, see [Use TLS with distributed key/value discovery](../discovery.md)

swarm/reference/manage.md

@@ -1,7 +1,6 @@
 ---
 description: Create a Swarm manager.
-keywords:
+keywords: swarm, create, manage
-- swarm, create, manage
 title: manage  — Create a Swarm manager
 ---
 
@@ -199,4 +198,4 @@ Use `--discovery-opt <value>` to discovery options, such as paths to the TLS fil
     --discovery-opt kv.certfile=/path/to/mycert.pem \
     --discovery-opt kv.keyfile=/path/to/mykey.pem \
 
-For more information, see [Use TLS with distributed key/value discovery](../discovery.md)
+For more information, see [Use TLS with distributed key/value discovery](../discovery.md)

swarm/reference/swarm.md

@@ -1,8 +1,7 @@
 ---
 description: swarm command overview
-keywords:
+keywords: Swarm, cluster, commands
-- Swarm, cluster, commands
+title: 'Swarm: A Docker-native clustering system'
-title: "Swarm: A Docker-native clustering system"
 ---
 
 The `swarm` command runs a Swarm container on a Docker Engine host and performs the task specified by the required subcommand, `COMMAND`.
@@ -37,4 +36,4 @@ The `swarm` command has the following subcommands:
 - [list, l](list.md) - List the nodes in a Docker cluster
 - [manage, m](manage.md) - Create a Swarm manager
 - [join, j](join.md) - Create a Swarm node
-- [help](help.md) - Display a list of Swarm commands, or help for one command
+- [help](help.md) - Display a list of Swarm commands, or help for one command

swarm/scheduler/filter.md

@@ -1,7 +1,6 @@
 ---
 description: Swarm filters
-keywords:
+keywords: docker, swarm, clustering, filters
-- docker, swarm, clustering,  filters
 title: Swarm filters
 ---
 
@@ -519,4 +518,4 @@ without a container that satisfies `redis*`
 - [Docker Swarm overview](../index.md)
 - [Discovery options](../discovery.md)
 - [Scheduler strategies](strategy.md)
-- [Swarm API](../swarm-api.md)
+- [Swarm API](../swarm-api.md)

swarm/scheduler/index.md

@@ -1,9 +1,8 @@
 ---
 description: 'Swarm: a Docker-native clustering system'
-keywords:
+keywords: docker, swarm, clustering, scheduling
-- docker, swarm, clustering, scheduling
 title: Advanced Scheduling
 ---
 
 To learn more about advanced scheduling, see the [strategies](strategy.md),
-[rescheduling](rescheduling.md), and [filters](filter.md) documents.
+[rescheduling](rescheduling.md), and [filters](filter.md) documents.

swarm/scheduler/rescheduling.md

@@ -1,7 +1,6 @@
 ---
 description: Swarm rescheduling
-keywords:
+keywords: docker, swarm, clustering, rescheduling
-- docker, swarm, clustering, rescheduling
 title: Swarm rescheduling
 ---
 
@@ -56,4 +55,4 @@ Failed to start rescheduled container 2362901cb213da321
 ## Related information
 
 * [Apply custom metadata](/engine/userguide/labels-custom-metadata/)
-* [Environment variables with run](/engine/reference/run/#env-environment-variables)
+* [Environment variables with run](/engine/reference/run/#env-environment-variables)

swarm/scheduler/strategy.md

@@ -1,7 +1,6 @@
 ---
 description: Swarm strategies
-keywords:
+keywords: docker, swarm, clustering,  strategies
-- docker, swarm, clustering,  strategies
 title: Docker Swarm strategies
 ---
 
@@ -119,4 +118,4 @@ strategy prefers the node with most containers.
 - [Docker Swarm overview](../index.md)
 - [Discovery options](../discovery.md)
 - [Scheduler filters](filter.md)
-- [Swarm API](../swarm-api.md)
+- [Swarm API](../swarm-api.md)

swarm/secure-swarm-tls.md

@@ -1,7 +1,6 @@
 ---
 description: Swarm and transport layer security
-keywords:
+keywords: docker, swarm, TLS, discovery, security, certificates
-- docker, swarm, TLS, discovery, security,  certificates
 title: Use Docker Swarm with TLS
 ---
 
@@ -158,4 +157,4 @@ facing production workloads exposed to untrusted networks.
 ## Related information
 
 * [Configure Docker Swarm for TLS](configure-tls.md)
-* [Docker security](/engine/security/security/)
+* [Docker security](/engine/security/security/)

swarm/status-code-comparison-to-docker.md

@@ -1,7 +1,6 @@
 ---
 description: Swarm API response codes
-keywords:
+keywords: docker, swarm, response, code, api
-- docker, swarm, response, code,  api
 title: Swarm vs. Engine response codes
 ---
 
@@ -558,4 +557,4 @@ The comparison is based on api v1.22, and all Docker Status Codes in api v1.22 a
 |204|204|
 |404|404|
 ||409|
-|500|500|
+|500|500|

swarm/swarm-api.md

@@ -1,10 +1,9 @@
 ---
+description: Swarm API
+keywords: docker, swarm, clustering,  api
 redirect_from:
 - /api/swarm-api/
 - /swarm/api/
-description: Swarm API
-keywords:
-- docker, swarm, clustering,  api
 title: Docker Swarm API
 ---
 
@@ -179,4 +178,4 @@ $ docker run --rm -it yourprivateimage:latest
 - [Docker Swarm overview](/swarm/)
 - [Discovery options](/swarm/discovery/)
 - [Scheduler strategies](/swarm/scheduler/strategy/)
-- [Scheduler filters](/swarm/scheduler/filter/)
+- [Scheduler filters](/swarm/scheduler/filter/)

swarm/swarm_at_scale/about.md

@@ -1,9 +1,8 @@
 ---
+description: Try Swarm at scale
+keywords: docker, swarm, scale, voting, application, architecture
 redirect_from:
 - /swarm/swarm_at_scale/about/
-description: Try Swarm at scale
-keywords:
-- docker, swarm, scale, voting, application, architecture
 title: Learn the application architecture
 ---
 
@@ -101,4 +100,4 @@ step wouldn't be needed.
 
 Now that you understand the application architecture, you need to deploy a
 network configuration that can support it. In the next step, you
-[deploy network infrastructure](deploy-infra.md) for use in this sample.
+[deploy network infrastructure](deploy-infra.md) for use in this sample.

swarm/swarm_at_scale/deploy-app.md

@@ -1,9 +1,8 @@
 ---
+description: Try Swarm at scale
+keywords: docker, swarm, scale, voting, application, certificates
 redirect_from:
 - /swarm/swarm_at_scale/04-deploy-app/
-description: Try Swarm at scale
-keywords:
-- docker, swarm, scale, voting, application,  certificates
 title: Deploy the application
 ---
 
@@ -418,4 +417,4 @@ Congratulations. You have successfully walked through manually deploying a
 microservice-based application to a Swarm cluster. Of course, not every
 deployment goes smoothly. Now that you've learned how to successfully deploy an
 application at scale, you should learn [what to consider when troubleshooting
-large applications running on a Swarm cluster](troubleshoot.md).
+large applications running on a Swarm cluster](troubleshoot.md).

swarm/swarm_at_scale/deploy-infra.md

@@ -1,10 +1,9 @@
 ---
+description: Try Swarm at scale
+keywords: docker, swarm, scale, voting, application, certificates
 redirect_from:
 - /swarm/swarm_at_scale/03-create-cluster/
 - /swarm/swarm_at_scale/02-deploy-infra/
-description: Try Swarm at scale
-keywords:
-- docker, swarm, scale, voting, application,  certificates
 title: Deploy application infrastructure
 ---
 
@@ -431,4 +430,4 @@ commands below, notice the label you are applying to each node.
 ## Next Step
 
 Your key-value store, load balancer, and Swarm cluster infrastructure are up. You are
-ready to [build and run the voting application](deploy-app.md) on it.
+ready to [build and run the voting application](deploy-app.md) on it.

swarm/swarm_at_scale/index.md

@@ -1,7 +1,6 @@
 ---
 description: Try Swarm at scale
-keywords:
+keywords: docker, swarm, scale, voting, application,  certificates
-- docker, swarm, scale, voting, application,  certificates
 title: Try Swarm at scale
 ---
 
@@ -23,4 +22,4 @@ complete and has the following steps:
 - [Learn the application architecture](about.md)
 - [Deploy your infrastructure](deploy-infra.md)
 - [Deploy the application](deploy-app.md)
-- [Troubleshoot the application](troubleshoot.md)
+- [Troubleshoot the application](troubleshoot.md)

swarm/swarm_at_scale/troubleshoot.md

@@ -1,9 +1,8 @@
 ---
+description: Try Swarm at scale
+keywords: docker, swarm, scale, voting, application,  certificates
 redirect_from:
 - /swarm/swarm_at_scale/05-troubleshoot/
-description: Try Swarm at scale
-keywords:
-- docker, swarm, scale, voting, application,  certificates
 title: Troubleshoot the application
 ---
 
@@ -213,4 +212,4 @@ useful documentation:
 
 * [Plan for Swarm in production](../plan-for-production.md)
 * [Swarm and container networks](../networking.md)
-* [High availability in Docker Swarm](../multi-manager-setup.md)
+* [High availability in Docker Swarm](../multi-manager-setup.md)