fix(Dockerfile): remove internal mirror configuration from backend and frontend Dockerfiles

backend/Dockerfile

@@ -7,14 +7,6 @@ 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 \

frontend/Dockerfile

@@ -2,8 +2,6 @@ FROM node:20-alpine AS deps
 
 WORKDIR /app
 
-RUN npm config set registry https://package-mirror.liara.ir/repository/npm/ --global
-
 COPY package*.json ./
 
 RUN npm ci