Implement a role for deploying Caddy

roles/caddy/templates/caddy.service.j2

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+# caddy.service
+#
+# For using Caddy with a config file.
+#
+# Make sure the ExecStart and ExecReload commands are correct
+# for your installation.
+#
+# See https://caddyserver.com/docs/install for instructions.
+#
+# WARNING: This service does not use the --resume flag, so if you
+# use the API to make changes, they will be overwritten by the
+# Caddyfile next time the service is restarted. If you intend to
+# use Caddy's API to configure it, add the --resume flag to the
+# `caddy run` command or use the caddy-api.service file instead.
+
+[Unit]
+Description=Caddy
+Documentation=https://caddyserver.com/docs/
+After=network.target network-online.target
+Requires=network-online.target
+
+[Service]
+Type=notify
+User=caddy
+Group=caddy
+ExecStart=/usr/bin/caddy run --environ --config {{ caddy_dest_conf_path }}
+ExecReload=/usr/bin/caddy reload --config {{ caddy_dest_conf_path }} --force
+TimeoutStopSec=5s
+LimitNOFILE={{ caddy_limit_nofile }}
+PrivateTmp=true
+ProtectSystem=full
+AmbientCapabilities=CAP_NET_ADMIN CAP_NET_BIND_SERVICE
+
+[Install]
+WantedBy=multi-user.target