add setup-minikube in github actions tutorial

site/content/en/docs/tutorials/use_minikube_in_github_acrtions.md

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+---
+title: "use minikube as CI testing in github actions"
+linkTitle: "minikube in github actions"
+weight: 1
+date: 2020-06-02
+description: >
+  How to use minikube in github actions for testing ?
+---
+
+### How to run minikube in github acitons ?
+
+you can add [setup-minikube](https://github.com/marketplace/actions/setup-minikube) as a step in your workflow.
+
+To install and start a minikube cluster, add the following step to your [github action workflow](https://help.github.com/en/actions/configuring-and-managing-workflows/configuring-a-workflow).
+
+```yaml
+    steps:
+    - name: start minikube
+      id: minikube
+      uses: medyagh/setup-minikube@master
+```
+
+## Full example: build image and deploy to minikube on each PR
+
+Required :
+
+- a valid Dockerfile
+- a valid deployment.yaml  (make sure image pull policy is set to never see bellow for example
+
+- Copy the yaml to `.github/workflows/pr.yml` in your github repo.
+- Make a PR to your repo and see the result in github actions.
+
+```yaml
+name: CI
+on:
+  - pull_request
+jobs:
+  job1:
+    runs-on: ubuntu-latest
+    name: build example and deploy to minikbue
+    steps:
+    - uses: actions/checkout@v2
+    - name: Start minikube
+      uses: medyagh/setup-minikube@master
+    - name: Try the cluster !
+      run: kubectl get pods -A
+    - name: Build image
+      run: |
+        export SHELL=/bin/bash
+        eval $(minikube -p minikube docker-env)
+        docker build -f ./Dockerfile -t local/example1 .
+        echo -n "verifying images:"
+        docker images
+    - name: Deploy to minikube
+      run:
+        kubectl apply -f deploy-to-minikube.yaml
+    - name: Test service URLs
+      run: |
+        minikube service list
+        minikube service example --url
+        echo "------------------opening the service------------------"
+        curl $(minikube service example --url)/version
+```
+
+In this example, the above workflow yaml, will do the following steps on each coming PR:
+
+1- Checks out the the source code
+2- Installs and starts minikube
+3- Trying out the cluster just by running kubectl get pods -A
+4- Build the docker image using minikube's docker-env feature
+5- Apply the yaml deployment yaml file minikube
+6- Check the service been created in minikube
+
+### example deployment yaml for minikube
+
+```yaml
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+    name: example
+spec:
+    selector:
+        matchLabels:
+            app: example
+    replicas: 2
+    template:
+        metadata:
+            labels:
+                app: example
+        spec:
+            containers:
+                - name: example-api
+                  imagePullPolicy: Never
+                  image: local/example:latest
+                  resources:
+                      limits:
+                          cpu: 50m
+                          memory: 100Mi
+                      requests:
+                          cpu: 25m
+                          memory: 10Mi
+                  ports:
+                      - containerPort: 8080
+---
+apiVersion: v1
+kind: Service
+metadata:
+    name: example
+spec:
+    type: NodePort
+    selector:
+        app: example
+    ports:
+        - port: 8080
+          targetPort: 8080
+```