add swarm deployment

swarm/README.md

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+# How to deploy
+
+This deployment uses docker-stack-deploy to make secret and configuration management easier. See https://github.com/neuroforgede/docker-stack-deploy.
+
+This assumes you have a Docker swarm running. Once set up, you will need a
+traefik instance configured to work with constraint `traefik-public` and a network `traefik-public`.
+
+This also expects encryption to be handled outside of docker swarm by a LB that has access to the Swarm.
+
+Also, Geo-IP is not supported yet (but being worked on).
+
+## 1. Adapt passwords in plausible
+
+Admin users are users that are allowed to create new passwords.
+To manage these users, simply adapt the file `secrets/admin_users.sh`
+
+## 2. Adapt values in swarm/secrets/plausible_analytics/plausible-conf.env
+
+Replace all variables with `<placeholders>` according to your needs.
+
+## 3. Adapt values in swarm/plausible.yml
+
+Replace all variables with `<placeholders>` according to your needs.
+
+## 4. Run deploy
+
+```
+bash deploy.sh
+```
+
+## 5. Use it
+
+You can now find your plausible application under the domain you configured in `swarm/secrets/plausible_analytics/plausible-conf.env`.
+
+Creating new passwords will require the login from login from `swarm/secrets/plausible_analytics/plausible-conf.env`.