Update Dockerfile

Dockerfile

@@ -1,5 +1,6 @@
 FROM python:3.9-slim
 
+# Create app directory
 WORKDIR /app
 
 RUN apt-get update && apt-get install -y \
@@ -8,7 +9,7 @@ RUN apt-get update && apt-get install -y \
     git \
     && rm -rf /var/lib/apt/lists/*
 
-# Set Streamlit cache dir to /tmp
+# Set a writable streamlit config/cache directory
 ENV STREAMLIT_HOME=/tmp/.streamlit
 ENV STREAMLIT_CONFIG_DIR=/tmp/.streamlit
 ENV XDG_CONFIG_HOME=/tmp
@@ -17,10 +18,11 @@ ENV XDG_CONFIG_HOME=/tmp
 COPY requirements.txt .
 RUN pip3 install --no-cache-dir -r requirements.txt
 
-# Copy Streamlit app code
-COPY src/ .  # make sure your app is inside src/streamlit_app.py
+# Copy app source
+COPY ./src ./src
+WORKDIR /app/src
 
-# Expose default Streamlit port
+# Expose Streamlit default port
 EXPOSE 8501
 
 HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health || exit 1