add stop_existing_test_containers - stops container if it's exits

Author: Roman

tests/e2e_tests/conftest.py

@@ -20,6 +20,7 @@
 )
 
 LOCALNET_IMAGE_NAME = "ghcr.io/opentensor/subtensor-localnet:devnet-ready"
+CONTAINER_NAME_PREFIX = "test_local_chain_"
 
 
 def wait_for_node_start(process, timestamp=None):
@@ -163,7 +164,25 @@ def try_start_docker():
         print("Docker wasn't run. Manual start may be required.")
         return False
 
-    container_name = f"test_local_chain_{str(time.time()).replace('.', '_')}"
+    def stop_existing_test_containers():
+        """Stop running Docker containers with names starting with 'test_local_chain_'."""
+        try:
+            existing_container_result = subprocess.run(
+                ["docker", "ps", "--filter", f"name={CONTAINER_NAME_PREFIX}", "--format", "{{.ID}}"],
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE,
+                text=True,
+                check=True
+            )
+            container_ids = existing_container_result.stdout.strip().splitlines()
+            for cid in container_ids:
+                if cid:
+                    print(f"Stopping existing container: {cid}")
+                    subprocess.run(["docker", "stop", cid], check=True)
+        except subprocess.CalledProcessError as e:
+            print(f"Failed to stop existing containers: {e}")
+
+    container_name = f"{CONTAINER_NAME_PREFIX}{str(time.time()).replace('.', '_')}"
 
     # Command to start container
     cmds = [
@@ -182,6 +201,8 @@ def try_start_docker():
 
     try_start_docker()
 
+    stop_existing_test_containers()
+
     # Start container
     with subprocess.Popen(
         cmds,