Add sane mailman core configuration.

- Add configuration for exim to work with mailman core.
- Add configuration to enable hyperkitty in mailman core.
- Add configuration to enable mailman_hyperkitty plugin.
- Add mailman_hyperkitty plugin and ipython in the core container.

core/Dockerfile

@@ -7,7 +7,8 @@ ENV DEBIAN_FRONTEND=noninteractive
 # from the Gitlab.
 RUN apt-get update && apt-get install -y postgresql-client postfix \
     && pip install git+https://gitlab.com/mailman/mailman.git \
-	               psycopg2
+	               git+https://gitlab.com/mailman/mailman-hyperkitty.git \
+	               psycopg2 ipython
 
 ADD assets/run.sh /opt/run.sh
 

core/assets/mailman-hyperkitty.cfg

@@ -0,0 +1,9 @@
+[general]
+# This is your HyperKitty installation, preferably on the localhost. This
+# address will be used by Mailman to forward incoming emails to HyperKitty
+# for archiving. It does not need to be publicly available, in fact it's
+# better if it is not.
+base_url: http://mailman-web:8000/hyperkitty/
+# Shared API key, must be the identical to the value in HyperKitty's
+# settings.
+api_key: ASmallAPIKey

core/assets/mailman.cfg

@@ -1,28 +1,35 @@
-# [devmode]
-# enabled: yes
-# testing: yes
-# recipient: you@yourdomain.com
-
-[webservice]
-hostname: 0.0.0.0
-
-
 [mta]
-smtp_port: 9025
-lmtp_port: 9024
-incoming: mailman.testing.mta.FakeMTA
+incoming: mailman.mta.exim4.LMTP
+outgoing: mailman.mta.deliver.deliver
+lmtp_host: mailman-core
+lmtp_port: 8024
+smtp_host: 172.19.199.1
+smtp_port: 25
+configuration: python:mailman.config.exim4
 
-[archiver.mhonarc]
-enable: yes
+# [archiver.mhonarc]
+# enable: yes
 
-[archiver.mail_archive]
-enable: yes
+# [archiver.mail_archive]
+# enable: yes
 
-[archiver.prototype]
-enable: yes
+# [archiver.prototype]
+# enable: yes
 
 [runner.retry]
 sleep_time: 10s
 
 [shell]
 use_ipython: yes
+
+[webservice]
+hostname: mailman-core
+
+[archiver.hyperkitty]
+class: mailman_hyperkitty.Archiver
+enable: yes
+configuration: /opt/mailman/mailman-hyperkitty.cfg
+
+[database]
+class: mailman.database.postgresql.PostgreSQLDatabase
+url: postgres://mailman:mailmanpass@database/mailmandb