UPDATE

entrypoint.sh

@@ -1,10 +1,47 @@
 #!/bin/sh
 set -e
+
+wait_for_db() {
+  python - <<'PY'
+import os
+import socket
+import sys
+import time
+
+host = os.environ.get("DB_HOST", "db")
+port = int(os.environ.get("DB_PORT", "3306"))
+deadline = time.time() + 90
+
+while time.time() < deadline:
+    try:
+        with socket.create_connection((host, port), timeout=3):
+            print(f"Database is reachable at {host}:{port}")
+            sys.exit(0)
+    except OSError as exc:
+        print(f"Waiting for database {host}:{port}... {exc}")
+        time.sleep(2)
+
+print(f"Timed out waiting for database {host}:{port}", file=sys.stderr)
+sys.exit(1)
+PY
+}
+
 if [ "${SKIP_MIGRATE}" != "1" ]; then
+  wait_for_db
   echo "Running migrations..."
   python manage.py repair_location_tables
   python manage.py migrate --noinput
   echo "Migrations done."
 fi
+
+if [ -n "${DEVELOP}" ] && [ "${SKIP_MIGRATE}" != "1" ]; then
+  echo "DEVELOP is set. Seeding demo plant, location_data, weather_data, and farm_data..."
+  python manage.py seed_plants
+  python manage.py seed_location_data
+  python manage.py seed_weather_data
+  python manage.py seed_farm_data
+  echo "Demo seeders done."
+fi
+
 echo "Starting command: $*"
 exec "$@"