diff --git a/Dockerfile b/Dockerfile
index 7cfe1ee..7e1030c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,6 +25,7 @@ COPY ./requirements.txt /code/requirements.txt
 COPY ./app /code/app
 
 RUN python3.11 -m pip install --upgrade pip
+RUN python3.11 -m pip cache purge
 RUN echo Y | python3.11 -m pip install --no-cache-dir --upgrade -r /code/requirements.txt
 
 CMD ["python", "main.py"]
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diff --git a/app/write_error_to_log.py b/app/write_error_to_log.py
new file mode 100644
index 0000000..aeea126
--- /dev/null
+++ b/app/write_error_to_log.py
@@ -0,0 +1,19 @@
+import datetime
+import os
+
+TIMESTAMP = datetime.datetime.now().strftime("%d-%m-%Y %H:%M:%S")
+LOG_FILE = "error_log.txt"
+
+def write_to_log(error_message, log_file=LOG_FILE):
+    """
+    Записывает ошибку в лог-файл с временной меткой
+    """
+    with open(log_file, 'a', encoding='utf-8') as f:
+        f.write(f"[{TIMESTAMP}] {error_message}\n")
+
+def clear_to_log(log_file=LOG_FILE):
+    """
+    Очищает лог-файл и записывает новую шапку
+    """
+    with open(log_file, 'w', encoding='utf-8') as f:
+        f.write(f'=== Лог ошибок создан в {TIMESTAMP} ===\n\n')
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