add additionalMounts and additionalVolumeMounts to values and deployment. (#40)

This is to simplify injecting dynamic configuration files (for example
postfix maps modified by an external program) into the container.

Bump chart version to 0.3.1.

Author: rspier

charts/docker-mailserver/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: "8.0.1"
 description: A fullstack but simple mailserver (smtp, imap, antispam, antivirus, ssl...) using Docker.
 name: docker-mailserver
-version: 0.3.2
+version: 0.3.3
 sources:
 - https://github.com/funkypenguin/helm-docker-mailserver
 maintainers:

charts/docker-mailserver/templates/deployment.yaml

@@ -52,6 +52,9 @@ spec:
 {{- else }}
              secretName: {{ template "dockermailserver.fullname" . }}-tls
 {{- end }}
+{{- end }}
+{{ if .Values.additionalVolumes }}
+{{- toYaml .Values.additionalVolumes | indent 9 }}
 {{- end }}
       initContainers:
         - name: prep-config
@@ -143,6 +146,9 @@ spec:
               readOnly: true
               {{- end }}
               {{- end }}
+{{ if .Values.additionalVolumeMounts }}
+{{ toYaml .Values.additionalVolumeMounts | indent 12 }}
+{{- end }}
           livenessProbe:
             exec:
                command:

charts/docker-mailserver/values.yaml

@@ -59,6 +59,15 @@ ssl:
 psp:
   create: true
 
+## Mount additional volumes into the container.  Useful for persistent logs or
+## injecting additional config files.
+#additionalVolumes:
+#  - name: "additional"
+#    emptyDir: {}
+#additionalVolumeMounts:
+#  - name: additional
+#    mountPath: /additional
+
 demoMode:
   # demoMode.enabled ignores the contents of helm-chart/docker-mailserver/config and creates minimal static configuration to be used instead. A single account (user "user@example.com", password "password") will be configured for the purpose of validating core functions and connectivity, before applying user config
   enabled: true