add helm chart to deploy on Kubernetes clusters

documentation/kubernetes.md

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+# Helm
+This project has a helm chart, in order to use it, the Docker image must first be built and loaded into a repo.
+
+After this is done, copy the file from `helm/values.yml` and fill it in. Here you can see a small example with fields that have to be filled in:
+
+````yml
+deployment:
+    image: <url to image>
+    files:
+        # Location of .env file
+        env: <path to .env file>
+        # Location of storage folder
+        storage: <path to storage folder>
+
+ingress:
+    url: <url to reach shaark instance>
+    #optional
+    annotations:
+        cert-manager.io/issuer: "<issuer name when used cert-manager>"
+````
+if no cert-manager is used, the appropriate certificate must be stored under <name>-secret-tls as secret
+
+Once this has been done, you can install the helm chart as follows: `helm install <name> ./helm --values <edit-values-file>`
+
+The installation comes without mysql and redis if this is required, this must be installed externally by existing charts from the intenet and then the corresponding kubernetes-url must be stored in the .env as host

helm/Chart.yaml

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+apiVersion: v2
+
+name: Shaark
+description: "Shaark is a self-hosted platform to keep and share your content: web links, posts, passwords and pictures."
+
+type: application
+version: 2.0.0-alpha
+
+appVersion: 2.0.0-alpha

helm/templates/Deployment.yml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "Shaark.name" . }}-deployment
+  namespace: {{ .Release.Namespace }}
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: {{ include "Shaark.name" . }}
+  template:
+    metadata:
+      labels:
+        app: {{ include "Shaark.name" . }}
+    spec:
+      containers:
+        - name: shaark
+          image: {{.Values.deployment.image}}
+          imagePullPolicy: Always
+          ports:
+            - containerPort: 80
+          volumeMounts:
+            - name: env
+              mountPath: /var/www/laravel/.env
+              subPath: .env
+            - name: storage
+              mountPath: /var/www/laravel/storage
+      volumes:
+        - name: env
+          hostPath:
+            path: {{ .Values.deployment.files.env }}
+        - name: storage
+          hostPath:
+            path: {{ .Values.deployment.files.storage }}

helm/templates/Ingress.yml

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+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ include "Shaark.name" . }}-ingress
+  namespace: {{ .Release.Namespace }}
+  annotations:
+    nginx.ingress.kubernetes.io/proxy-body-size: 1G
+    nginx.org/client-max-body-size: 1G
+    {{- .Values.ingress.annotations | toYaml | indent 4}}
+spec:
+  tls:
+    - hosts:
+        - {{ .Values.ingress.url }}
+      secretName: {{ include "Shaark.name" . }}-secret-tls
+  rules:
+    - host: {{ .Values.ingress.url }}
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: {{ include "Shaark.name" . }}-service
+                port:
+                  number:  80

helm/templates/Service.yml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "Shaark.name" . }}-service
+  labels:
+    app: {{ include "Shaark.name" . }}
+  namespace: {{ .Release.Namespace }}
+spec:
+  selector:
+    app: {{ include "Shaark.name" . }}
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 80

helm/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+
+{{- define "Shaark.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}

helm/values.yaml

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+nameOverride:
+
+deployment:
+    image:
+    files:
+        # Location of .env file
+        env:
+        # Location of storage folder
+        storage:
+
+ingress:
+    url:
+    #Example
+    # annotations:
+    #    cert-manager.io/issuer: "letsencrypt-prod"
+    #    nginx.ingress.kubernetes.io/ssl-redirect: true
+    annotations: