add mirror for Dockerfiles

backend/Dockerfile

@@ -7,6 +7,14 @@ ENV PYTHONUNBUFFERED=1
 # Set work directory
 WORKDIR /app
 
+RUN rm -f /etc/apt/sources.list.d/debian.sources && \
+    printf '%s\n' \
+    'deb http://mirror-linux.runflare.com/debian trixie main' \
+    'deb http://mirror-linux.runflare.com/debian-security trixie-security main' \
+    > /etc/apt/sources.list && \
+    echo 'Acquire::Check-Valid-Until "false";' > /etc/apt/apt.conf.d/99no-check-valid
+
+
 # Install system dependencies
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
@@ -17,7 +25,7 @@ RUN apt-get update \
 
 # Install Python dependencies
 COPY requirements.txt /app/
-RUN pip install --no-cache-dir -r requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt -i https://package-mirror.liara.ir/repository/pypi/simple
 
 # Copy project
 COPY . /app/