Add tags to tutorials

Author: kangasta

docs/tutorials/docker/docker-on-wsl/README.md

@@ -1,5 +1,8 @@
 ---
 description: Tutorial on how to install and configure Docker and Docker Compose on Ubuntu running inside Windows Subsystem for Linux.
+tags:
+  - Docker
+  - Windows Subsystem for Linux
 ---
 
 # Install Docker on Windows Subsystem for Linux
@@ -73,7 +76,7 @@ If not launched automatically, open the installed Ubuntu distro (e.g., by clicki
 
 Open Ubuntu you just installed and follow [Install Docker Engine on Ubuntu](https://docs.docker.com/engine/install/ubuntu/) instructions.
 
-__tl;dr:__ Run the convenience script available in `get.docker.com`:
+**tl;dr:** Run the convenience script available in `get.docker.com`:
 
 ```sh
 curl -fsSL https://get.docker.com -o get-docker.sh
@@ -172,7 +175,7 @@ If `docker` commands print `Cannot connect to the Docker daemon at unix:///var/r
 
 Follow [Install Docker Compose](https://docs.docker.com/compose/install/) instructions for Linux.
 
-__tl;dr:__ Install Docker Compose with the distros package manager:
+**tl;dr:** Install Docker Compose with the distros package manager:
 
 ```sh
 sudo apt-get update

docs/tutorials/gitlab-ci/docker-hub-ratelimit/README.md

@@ -1,5 +1,8 @@
 ---
 description: Tutorial on how to test if Docker-in-Docker service in GitLab CI accesses Docker Hub directly and how to configure pull-through cache to an Kubernetes cluster working as a GitLab runner.
+tags:
+  - Docker
+  - GitLab CI
 ---
 
 # Docker-in-Docker service and Docker Hub ratelimit

docs/tutorials/jenkins/ansible-kubernetes/README.md

@@ -1,5 +1,9 @@
 ---
 description: Tutorial on how to configure a Jenkins pipeline that deploys an simple hello-world application to a Kubernetes cluster.
+tags:
+  - Ansible
+  - Jenkins
+  - Kubernetes
 ---
 
 # Deploy application to Kubernetes with Ansible

docs/tutorials/jenkins/build-status-pipelines/README.md

@@ -1,5 +1,7 @@
 ---
 description: Tutorial on how to configure a Jenkins pipeline that creates pipelines with five different statuses into a new folder using Job DSL.
+tags:
+  - Jenkins
 ---
 
 # Build status pipelines and Job DSL

docs/tutorials/jenkins/jenkins-host-docker/README.md

@@ -1,5 +1,8 @@
 ---
 description: Tutorial on how to run Jenkins inside a container with Docker client that controls host machines Docker engine using a socket.
+tags:
+  - Docker
+  - Jenkins
 ---
 
 # Jenkins with access to hosts Docker engine

docs/tutorials/jenkins/parallel-robot-pipeline/README.md

@@ -1,5 +1,9 @@
 ---
 description: Tutorial on how to configure a Jenkins pipeline that executes Robot Framework automation tasks with docker agent in parallel stages as well as combines and stores the produced HTML/XML report files.
+tags:
+  - Docker
+  - Jenkins
+  - Robot Framework
 ---
 
 # Parallel Robot Framework pipeline

docs/tutorials/jenkins/sonarqube-jenkins/README.md

@@ -1,5 +1,8 @@
 ---
 description: Tutorial on how to push code scanning results from Jenkins pipeline to SonarQube and how to display SonarQube data in Jenkins.
+tags:
+  - Jenkins
+  - SonarQube
 ---
 
 # Integrating Jenkins and SonarQube

mkdocs.yaml

@@ -64,6 +64,7 @@ plugins:
       enable_creation_date: true
   - search
   - social
+  - tags
 
 markdown_extensions:
   - admonition