Added init container to covid deployment to wait for mysql

helm/covidok/templates/deployment.yaml

@@ -5,7 +5,7 @@ metadata:
   labels:
     {{- include "covidok.labels" . | nindent 4 }}
 spec:
-  replicas: 1
+  replicas: 3
   selector:
     matchLabels:
       {{- include "covidok.selectorLabels" . | nindent 6 }}
@@ -22,6 +22,11 @@ spec:
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      initContainers:
+        - name: mysql
+          image: mysql:8.0
+          command: ["/bin/bash"]
+          args: ["-c", "while ! mysqladmin ping -h mysql --silent; do sleep 1; done"]
       containers:
         - name: {{ .Chart.Name }}
           image: "{{ .Values.images.covidok.name }}:{{ .Values.images.covidok.tag }}"