Reset db.json before each json-server start in Docker

- Created start-json-server.sh script to reset db.json from backup
- This ensures each test run starts with clean data
- Fixes accumulating test data causing failures in CI
- DELETE requests work correctly but data was persisting across runs

Author: kobenguyent

test/docker-compose.yml

@@ -70,7 +70,7 @@ services:
   json_server:
     <<: *test-service
     entrypoint: []
-    command: npm run test-server
+    command: /bin/bash /codecept/test/scripts/start-json-server.sh
     ports:
       - '8010:8010' # Expose to host
     restart: always # Automatically restart the container if it fails or becomes unhealthy

test/scripts/start-json-server.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+# Reset db.json to its initial state before starting json-server
+# This ensures tests always start with clean data
+
+DB_FILE="/codecept/test/data/rest/db.json"
+BACKUP_FILE="/codecept/test/data/rest/db.json.backup"
+
+# Create backup if it doesn't exist
+if [ ! -f "$BACKUP_FILE" ]; then
+  echo "Creating backup of original db.json..."
+  cp "$DB_FILE" "$BACKUP_FILE"
+fi
+
+# Always restore from backup before starting
+echo "Restoring db.json from backup..."
+cp "$BACKUP_FILE" "$DB_FILE"
+
+# Start the server
+echo "Starting json-server..."
+exec npm run test-server