Add proper email notifications

entrypoint.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+# hamprint container entrypoint.
+#
+# Runs everything inside the single `web` container per plan.md §10:
+#   1. apply DB migrations (idempotent; runs on every start)
+#   2. background `process_submissions` (plan.md §7.5, 30 s loop)
+#   3. background `cleanup_stale`       (plan.md §7.6, 5 min loop)
+#   4. exec Gunicorn so it becomes the foreground process for signal handling
+#
+# tini (set as ENTRYPOINT in the Containerfile) reaps zombies and forwards
+# SIGTERM to all three child processes on container stop.
+
+set -euo pipefail
+
+python manage.py migrate --noinput
+
+# Validation worker. `|| true` keeps the loop alive across a transient
+# failure (e.g. a flaky external HEAD request); the next tick retries.
+(
+  while true; do
+    python manage.py process_submissions || true
+    sleep 30
+  done
+) &
+
+# Stale-row reaper. Same pattern, different cadence.
+(
+  while true; do
+    python manage.py cleanup_stale || true
+    sleep 300
+  done
+) &
+
+exec gunicorn hamprint.wsgi:application \
+    --bind 0.0.0.0:8000 \
+    --workers "${GUNICORN_WORKERS:-3}" \
+    --access-logfile - \
+    --error-logfile -