send emails

Dockerfile

@@ -1,8 +1,13 @@
 FROM alpine:3.13.1 AS build
+ENV EMAIL monit@sutty.nl
+
 RUN apk add --no-cache tzdata
 
 FROM alpine:3.13.1
 MAINTAINER "f <f@sutty.nl>"
+COPY ./monitrc /etc/monitrc
+RUN chmod 600 /etc/monitrc
+RUN sed -re "s/@@EMAIL@@/${EMAIL}/" -i /etc/monitrc
 
 # TODO: We don't want to receive lots of email, so we'll change this to
 # a pingy instance that will also work as a status site.
@@ -18,8 +23,7 @@ RUN install -dm 2750 -o root -g root /var/lib/monit
 
 # Install config. monit.conf~ will be activated after allow_networks
 # runs.
-COPY ./monitrc /etc/monitrc
-RUN chmod 600 /etc/monitrc
+COPY --from=build /etc/monitrc /etc/monitrc
 
 # Allow access to the web GUI
 EXPOSE 2812

monitrc

@@ -7,6 +7,7 @@ set statefile /var/lib/monit/state
 set eventqueue basedir /var/lib/monit/events slots 100
 set mailserver postfix
 set limits { programoutput: 1 MB }
+set alert @@EMAIL@@
 
 set httpd port 2812
   allow localhost