remove TODO comment block

compose.yml

@@ -1,7 +1,30 @@
 services:
   website:
-    build: website
+    build:
+      context: website
+    env_file:
+      - .env
+    environment:
+      LOCAL_SMTP_HOST: smtp
+      LOCAL_SMTP_PORT: 2500
+      LOCAL_SMTP_PASSWORD: smtp
     ports:
       - "8000:4321"
+
   smtp:
-    build: smtp
+    build:
+      context: smtp
+      args:
+        LOCAL_SMTP_PORT: 2500
+    env_file:
+      - .env
+    environment:
+      LOCAL_SMTP_PORT: 2500
+      LOCAL_SMTP_PASSWORD: smtp
+      REMOTE_SMTP_PASSWORD_FILE: /run/secrets/remote_smtp_password
+    secrets:
+      - remote_smtp_password
+
+secrets:
+  remote_smtp_password:
+    external: true

website/Dockerfile

@@ -1,18 +1,6 @@
 FROM node:lts-alpine3.22 AS runtime
 WORKDIR /app
 
-################### TODO ###################
-# - Add another service on the same network running an SMTP server such
-#   as msmtpd or Postfix
-# - Configure the SMTP server to send emails from me@joeac.net via Zoho
-# - Configure the website to use the SMTP server to send emails
-# - Test
-# - Push
-# - Test on RPi
-# - Consider: now you're running an SMTP server anyway, can you send it
-#   from your very own no-reply email address?
-############################################
-
 COPY package.json package-lock.json ./
 RUN npm install