fixed dockerfile

Dockerfile

@@ -32,8 +32,8 @@ WORKDIR /app
 # Install OS dependencies and set up locales
 RUN apt-get update --fix-missing && \
     apt-get install --no-install-recommends -y git curl locales && \
+    sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
     locale-gen en_US.UTF-8 && \
-    update-locale LANG=en_US.UTF-8 && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
 
 # Set locale environment variables