Update Dockerfile

Dockerfile

@@ -15,8 +15,11 @@ RUN apt-get update && apt-get install -y \
 
 COPY ./requirements.txt /code/requirements.txt
 
+# Устанавливаем зависимости, затем заменяем opencv-python на headless (легче, быстрее)
 RUN pip install --no-cache-dir --upgrade pip && \
-    pip install --no-cache-dir -r /code/requirements.txt
+    pip install --no-cache-dir -r /code/requirements.txt && \
+    pip uninstall -y opencv-python && \
+    pip install --no-cache-dir opencv-python-headless
 
 COPY . .