Fix rsa key size for dummy certificate

init-letsencrypt.sh

@@ -31,7 +31,9 @@ echo "### Creating dummy certificate for $domains ..."
 path="/etc/letsencrypt/live/$domains"
 mkdir -p "$data_path/conf/live/$domains"
 docker-compose run --rm --entrypoint "\
-  openssl req -x509 -nodes -newkey rsa:1024 -days 1\
+  openssl req -x509 -nodes \
+    -newkey rsa:$rsa_key_size \
+    -days 1 \
     -keyout '$path/privkey.pem' \
     -out '$path/fullchain.pem' \
     -subj '/CN=localhost'" certbot