From 56ecd507f62baea1f75de952dc8416ec64c068e8 Mon Sep 17 00:00:00 2001
From: Thomas Rausch <thomas@thrau.at>
Date: Wed, 2 Aug 2023 03:28:31 +0200
Subject: [PATCH] configure MAIN_DOCKER_NETWORK automatically if --network flag
 is used

---
 localstack/cli/localstack.py | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/localstack/cli/localstack.py b/localstack/cli/localstack.py
index 8dd71fb5a44ed..dd2fe75743039 100644
--- a/localstack/cli/localstack.py
+++ b/localstack/cli/localstack.py
@@ -455,6 +455,19 @@ def cmd_start(
         # pass the parsed cli params to the start infra command
         params = click.get_current_context().params
 
+        if network:
+            # reconciles the network config and makes sure that MAIN_DOCKER_NETWORK is set automatically if
+            # `--network` is set.
+            if config.MAIN_DOCKER_NETWORK:
+                if config.MAIN_DOCKER_NETWORK != network:
+                    raise click.ClickException(
+                        f"Values of MAIN_DOCKER_NETWORK={config.MAIN_DOCKER_NETWORK} and --network={network} "
+                        f"do not match"
+                    )
+            else:
+                config.MAIN_DOCKER_NETWORK = network
+                os.environ["MAIN_DOCKER_NETWORK"] = network
+
         if detached:
             bootstrap.start_infra_in_docker_detached(console, params)
         else: