diff --git a/crond/.dockerignore b/crond/.dockerignore
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index 0000000000000000000000000000000000000000..780ece0ba38bebbc9981d893ff31ffc6cb6815e2
--- /dev/null
+++ b/crond/.dockerignore
@@ -0,0 +1,2 @@
+*
+!crontab
diff --git a/crond/Dockerfile b/crond/Dockerfile
new file mode 100644
index 0000000000000000000000000000000000000000..a2b6b3ab84171d9d84df5cd9f64afb608d4ec367
--- /dev/null
+++ b/crond/Dockerfile
@@ -0,0 +1,6 @@
+FROM docker:18.09 as docker
+
+FROM adarnimrod/cron as supersonic
+COPY --from=docker /usr/local/bin/docker /usr/local/bin/
+COPY --chown=root:root crontab /crontab
+USER root
diff --git a/crond/README.md b/crond/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..8731172b30241d264d62a6bc0eb2f6c0728f0293
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+++ b/crond/README.md
@@ -0,0 +1,22 @@
+# crond
+
+> Cron container image.
+
+## Description
+
+This container runs Cron jobs for training SpamAssassin's Bayesian classifier
+and for updating ClamAV's virus database. The jobs run in the other containers,
+so the `dockerd` socket is bind mounted to this container and the commands are
+executed via `docker exec` in the other containers. Thus, outside of the context
+of this setup this container doesn't make much sense.
+
+## License
+
+This software is licensed under the MIT license (see `LICENSE.txt`).
+
+## Author Information
+
+Nimrod Adar, [contact me](mailto:nimrod@shore.co.il) or visit my [website](
+https://www.shore.co.il/). Patches are welcome via [`git send-email`](
+http://git-scm.com/book/en/v2/Git-Commands-Email). The repository is located
+at: <https://www.shore.co.il/git/>.
diff --git a/crond/crontab b/crond/crontab
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index 0000000000000000000000000000000000000000..4ed5df72d3db0396d9b98b5828b0433fc8b49396
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+++ b/crond/crontab
@@ -0,0 +1,2 @@
+@daily docker exec mail_clamd_1 clamd-update
+@daily docker exec mail_spamd_1 spamd-learn