Make use of initContainer instead of dockerfile for entrypoint.sh so custom-resources are better design-handled

[odysseu]

• [ ] take out https://github.com/InseeFrLab/onyxia/blob/main/web/Dockerfile#L34-L41

• [ ] Instead of deployment-web.yaml put something like this :

  deployment.yaml suggestion

  apiVersion: apps/v1
  kind: Deployment
  ...
  spec:
    ...
    template:
      ...
      spec:
      ...
  apiVersion: apps/v1
  kind: Deployment
  metadata:
    name: {{ include "onyxia.web.fullname" . }}
    labels:
      {{- include "onyxia.web.labels" . | nindent 4 }}
  spec:
    replicas: {{ .Values.web.replicaCount }}
    selector:
      matchLabels:
        {{- include "onyxia.web.selectorLabels" . | nindent 6 }}
    template:
      metadata:
        labels:
          {{- include "onyxia.web.selectorLabels" . | nindent 8 }}
  {{- with .Values.web.podLabels }}
  {{ toYaml . | indent 8 }}
  {{- end }}
      spec:
      {{- with .Values.imagePullSecrets }}
        imagePullSecrets:
          {{- toYaml . | nindent 8 }}
      {{- end }}
        serviceAccountName: {{ include "onyxia.web.serviceAccountName" . }}
        securityContext:
          {{- toYaml .Values.web.podSecurityContext | nindent 8 }}
        initContainers:  #<-- needs initContainers
          - name: init-unzip
            image: "<init-container-image>"   #<-- needs image that has the tools necessary for unzipping
            command: ["/bin/sh", "-c"]
            args:
              - wget -O /tmp/custom-resources.zip {{ .Values.web.customResourcesTarGzFileURL }} && unzip /tmp/custom-resources.zip -d /usr/share/nginx/html/custom-resources
            volumeMounts:
              - name: custom-resources
                mountPath: /usr/share/nginx/html/custom-resources
        containers:
          - name: {{ .Chart.Name }}
            securityContext:
              {{- toYaml .Values.web.securityContext | nindent 12 }}
            image: "{{ .Values.web.image.repository }}:{{ .Values.web.image.tag }}"
            imagePullPolicy: {{ .Values.web.image.pullPolicy }}
            env:
              - name: ONYXIA_VERSION
                value: "{{ .Chart.Version }}"
              - name: ONYXIA_VERSION_URL
                value: "https://github.com/InseeFrLab/onyxia/releases/tag/v{{ .Chart.Version }}"
             {{- if .Values.web.env }}
              {{- range $key, $value := .Values.web.env }}
              - name: {{ $key }}
                value: {{ $value | quote }}
              {{- end -}}
              {{- end }}
            ports:
              - name: http
                containerPort: {{ .Values.web.containerPort }}
                protocol: TCP
            livenessProbe:
              httpGet:
                path: /
                port: http
            readinessProbe:
              httpGet:
                path: /
                port: http
            resources:
              {{- toYaml .Values.web.resources | nindent 12 }}
            {{- if .Values.web.extraVolumeMounts }}
            volumeMounts: {{- toYaml .Values.web.extraVolumeMounts | nindent 12 }}
            {{- end }}
        {{- with .Values.web.nodeSelector }}
        nodeSelector:
          {{- toYaml . | nindent 8 }}
        {{- end }}
      {{- with .Values.web.affinity }}
        affinity:
          {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.web.tolerations }}
        tolerations:
          {{- toYaml . | nindent 8 }}
      {{- end }}
        volumes:  #<-- added volumes bit
          - name: custom-resources
            emptyDir: {}
      {{- if .Values.web.extraVolumes }}
        {{- toYaml .Values.web.extraVolumes | nindent 8 }} #<-- not sure about indent
      {{- end }}
      {{- if .Values.web.priorityClassName }}
        priorityClassName: "{{ .Values.web.priorityClassName }}"
      {{- end }}
  
  

• [ ] add

  web:
    customResourcesTarGzFileURL: ""