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matrix-docker-ansible-deploy/roles/matrix-email2matrix
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Slavi Pantaleev d08b27784f Fix systemd services autostart problem with Docker 20.10 
The Docker 19.04 -> 20.10 upgrade contains the following change
in `/usr/lib/systemd/system/docker.service`:

```
-BindsTo=containerd.service
-After=network-online.target firewalld.service containerd.service
+After=network-online.target firewalld.service containerd.service multi-user.target
-Requires=docker.socket
+Requires=docker.socket containerd.service
Wants=network-online.target
```

The `multi-user.target` requirement in `After` seems to be in conflict
with our `WantedBy=multi-user.target` and `After=docker.service` /
`Requires=docker.service` definitions, causing the following error on
startup for all of our systemd services:

> Job matrix-synapse.service/start deleted to break ordering cycle starting with multi-user.target/start

A workaround which appears to work is to add `DefaultDependencies=no`
to all of our services.
2020-12-10 11:43:20 +02:00
..
defaults Use more fully-qualified container images 2020-11-14 23:01:11 +02:00
tasks Allow the matrix user username and groupname to be configured separately 2020-05-01 19:59:32 +02:00
templates Fix systemd services autostart problem with Docker 20.10 2020-12-10 11:43:20 +02:00