Update Dockerfile

Dockerfile

@@ -2,24 +2,27 @@ FROM python:3.9-slim
 
 WORKDIR /app
 
+# Install system dependencies including those for dlib
 RUN apt-get update && apt-get install -y \
     build-essential \
     curl \
     software-properties-common \
     git \
+    cmake \
+    libx11-dev \
+    libgtk-3-dev \
+    libxtst-dev \
+    libboost-all-dev \
     && rm -rf /var/lib/apt/lists/*
 
 COPY requirements.txt ./
-COPY src/ ./src/
-
-
-RUN apt-get update && apt-get install -y cmake libx11-dev libgtk-3-dev libxtst-dev && rm -rf /var/lib/apt/lists/*
-
-
+# Install Python dependencies before copying application code to leverage Docker caching
 RUN pip3 install -r requirements.txt
 
+COPY src/ ./src/
+
 EXPOSE 8501
 
 HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health
 
-ENTRYPOINT ["streamlit", "run", "src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0"]
+ENTRYPOINT ["streamlit", "run", "src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0"]