Deploy `digdag` systemd file and enable `digdag`.

cookbooks/digdag/files/etc/supervisor/conf.d/digdag.conf

@@ -1,7 +0,0 @@
-[program:digdag]
-command=/etc/digdag/digdag.sh
-stdout_logfile=/var/log/supervisor/digdag.log
-redirect_stderr=true
-stdout_logfile_maxbytes=1MB
-stdout_logfile_backups=5
-autorestart=true

cookbooks/digdag/files/lib/systemd/system/digdag.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=digdag
+Requires=network-online.target
+After=network-online.target
+
+[Service]
+Type=simple
+EnvironmentFile=-/etc/default/digdag
+Restart=on-failure
+ExecStart=/etc/digdag/digdag.sh
+KillSignal=process
+
+[Install]
+WantedBy=multi-user.target
+

cookbooks/digdag/setup.rb

@@ -36,17 +36,15 @@ execute 'ufw reload-or-enable' do
   action :nothing
 end
 
-# Deploy the config file for `supervisor`:
-remote_file '/etc/supervisor/conf.d/digdag.conf' do
+# Deploy the config file for `systemd`:
+remote_file '/lib/systemd/system/digdag.service' do
   owner 'root'
   group 'root'
   mode '644'
-
-  notifies :restart, 'service[supervisor]'
 end
 
-service 'supervisor' do
-  action :nothing
+service 'digdag' do
+  action [ :enable, :restart ]
 end
 
 # Deploy /etc/hosts file: