chore: Use bitnami instead of stock postgresql container (#960)

* chore: Setup all apps to use bitnami instead of stock postgresql container

* Actually don't bump major as there is no breaking change (as people using it will default to the migration initscript)

charts/incubator/sogo/SCALE/ix_values.yaml

@@ -9,24 +9,33 @@ image:
   tag: v5.2.0@sha256:8fc7bb87b77d76d929bcd36403d4f27878fa3e99f5448fb05ed64829078665a4
 
 postgresqlImage:
-  repository: postgres
+  repository: bitnami/postgresql
   pullPolicy: IfNotPresent
-  tag: 13.4-alpine@sha256:a70babcd0e8f86272c35d6efcf8070c597c1f31b3d19727eece213a09929dd55
+  tag: 13.4.0@sha256:7fff0f7e827cd8e1daa3adbf0ca3f19e21006023c0f6d1c2d835718961516a87
 
 initContainers:
-  - name: init-postgresdb
-    image: "{{ .Values.postgresqlImage.repository}}:{{ .Values.postgresqlImage.tag }}"
+  migrate-db:
+    image: "{{ .Values.alpineImage.repository}}:{{ .Values.alpineImage.tag }}"
+    securityContext:
+      runAsUser: 0
+      privileged: true
+      allowPrivilegeEscalation: true
+      runAsNonRoot: false
     command:
-      - "sh"
-      - "-c"
-      - "until pg_isready -U sogo -h ${pghost} ; do sleep 2 ; done"
+      - /bin/sh
+      - -cx
+      - |
+        echo 'trying to migrate old db to new location...'
+        mkdir -p /bitnami/postgresql/data
+        mv -f /bitnami/postgresql/old/* /bitnami/postgresql/data/ || true
+        chown -R {{ .Values.podSecurityContext.runAsUser }}:{{ .Values.podSecurityContext.fsGroup }} /bitnami/postgresql/data
+        chmod 775 /bitnami/postgresql/data
     imagePullPolicy: IfNotPresent
-    env:
-      - name: pghost
-        valueFrom:
-          secretKeyRef:
-            name: dbcreds
-            key: plainhost
+    volumeMounts:
+      - name: db
+        mountPath: /bitnami/postgresql/old
+      - name: data
+        mountPath: /bitnami/postgresql
 
 
 # Enabled postgres