System integration

The systemd unit file is provided for Exim container installation. It requires /etc/exim/container/<instance.yaml>

Unsorted notes

Podman configuration

If you run Podman, "podman compose" will use the configured compose provider. It defaults to "docker compose", but can be switched in containers.conf.

E.g. for system wide configuration, add to /etc/containers/containers.conf:

[engine]
compose_providers = ["podman-compose"]
compose_warning_logs = false            # switch off warnings about the compose provider

DNS

If there is a DNS server running, podman might fail to startup its own DNS listener (symtom: port in use). Restrict the DNS server (e.g. Bind) to the required interfaces (addresses).

Commands

Command command "prefix":

podman compose --podman-run-args=--replace -p <project> -f <compose-file>

• startup

  podman … up
  

• reload

  podman … kill --signal HUP daemon
  

  Where exim is the name of the service (defined in the compose file)

• execute any command in the running container

  podman … exec daemon <command>
  

• run any command in a new ephemral container

  podman … run --rm daemon <command>
  

There is a command "proxy" for the most important commands