feat(deploy): add job to run migrations

deploy/templates/migration-job.yaml

@@ -0,0 +1,36 @@
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: {{ .Release.Name }}-migrations-{{ now | unixEpoch }}
+  labels:
+    app.kubernetes.io/name: {{ .Chart.Name }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/component: "database-migrations"
+    batch.kubernetes.io/job-name: {{ .Release.Name }}-migrations-{{ now | unixEpoch }}
+spec:
+  ttlSecondsAfterFinished: 604800 # 1 week in seconds
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: {{ .Chart.Name }}
+        app.kubernetes.io/instance: {{ .Release.Name }}
+        app.kubernetes.io/component: "database-migrations"
+        batch.kubernetes.io/job-name: {{ .Release.Name }}-migrations-{{ now | unixEpoch }}
+    spec:
+      containers:
+        - name: migrations
+          image: "{{ .Values.migrations.image.repository }}:{{ .Values.migrations.image.tag }}"
+          command: ["/usr/local/bin/migrate"]
+          args: ["-path", "/srv/migrations/", "-database", "$MIGRATE_DATABASE_URL", "up"]
+          env:
+            - name: MIGRATE_DATABASE_URL
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}
+                  key: "database_url.txt"
+          {{- with .Values.migrations.resources }}
+          resources:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+      restartPolicy: Never
+  backoffLimit: 0