update dockerfile

Dockerfile

@@ -1,23 +1,32 @@
 # Use Ubuntu 22.04 as a public base image to avoid GHCR permissions
 FROM ubuntu:22.04
 
-# Enable strict bash mode
+# Disable interactive prompts and set timezone for tzdata
+ENV DEBIAN_FRONTEND=noninteractive
+ENV TZ=Etc/UTC
+
+# Use bash with strict modes for debugging
 SHELL ["/bin/bash", "-euxo", "pipefail", "-c"]
 
 # 1. Install OS-level dependencies
 RUN echo "### STEP 1: Installing OS-level dependencies" && \
     apt-get update && \
     apt-get install -y --no-install-recommends \
-        build-essential cmake libopenblas-dev python3 python3-pip python3-opencv && \
+        tzdata \
+        build-essential \
+        cmake \
+        libopenblas-dev \
+        python3 \
+        python3-pip \
+        python3-opencv && \
     rm -rf /var/lib/apt/lists/*
 
 # 2. Prepare the application directory
-RUN echo "### STEP 2: Setting working directory and copying source code"
+RUN echo "### STEP 2: Preparing application directory"
 WORKDIR /app
 COPY requirements.txt ./
-COPY packages.txt ./
 COPY app.py ./
-# COPY any other source files or folders needed by your app
+# Copy any other source files or directories needed by your app
 
 # 3. Install Python dependencies (excluding llama-cpp-python)
 RUN echo "### STEP 3: Installing Python dependencies" && \