feat: add example unit

Author: computator

entrypoint.sh

@@ -46,8 +46,10 @@ write_dma_auth () {
 	fi
 }
 
-: ${DMA_SMARTHOST=${SMARTHOST:-}}
-export DMA_SMARTHOST
+: \
+	${DMA_SMARTHOST=${SMARTHOST-}} \
+	${DMA_PORT=${SMARTHOST_PORT-}}
+export DMA_SMARTHOST DMA_PORT
 
 write_dma_conf
 case "$1" in

units/smtp-proxy.container

@@ -0,0 +1,21 @@
+[Unit]
+Description=SMTP Proxy
+
+[Container]
+Image=ghcr.io/computator/smtp-proxy
+AutoUpdate=registry
+ContainerName=smtp-proxy
+
+PublishPort=127.0.0.1:25:25
+
+Environment=SMARTHOST=smtp.example.com
+Environment=SMARTHOST_PORT=587
+Environment=AUTH_USER=smartuser
+Environment=AUTH_PASS_FILE=/run/secrets/smtp-proxy-pass
+
+Secret=smtp-proxy-pass
+
+Volume=smtp-proxy-queue:/var/spool/dma
+
+[Install]
+WantedBy=multi-user.target