initial code

Dockerfile

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+# Use official Python base image
+FROM python:3.9-slim
+
+# Prevent writing .pyc files and buffer issues
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+# Set working directory
+WORKDIR /app
+ENV HOME=/tmp
+
+# Copy requirements and install them
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy app code
+COPY . .
+
+# Expose the port Streamlit runs on
+EXPOSE 7860
+
+ 
+# Run the Streamlit app
+CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0", "--server.enableXsrfProtection=false", "--server.enableCORS=false"]

app.py

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+import streamlit as st
+import os
+
+
+os.makedirs('/tmp', exist_ok=True)
+os.makedirs('/tmp/data', exist_ok=True)
+st.title("📁 Document Upload & Download App")
+
+# File uploader
+uploaded_files = st.file_uploader("Upload documents", type=["pdf", "docx", "txt", "xlsx"], accept_multiple_files=True)
+
+if uploaded_files:
+    for file in uploaded_files:
+        file_path = os.path.join('/tmp/data', file.name)
+        with open(file_path, "wb") as f:
+            f.write(file.getbuffer())
+        st.success(f"Saved: {file.name}")
+
+st.markdown("---")
+st.subheader("📂 Download Saved Files")
+
+saved_files = os.listdir("/tmp/data")
+print(saved_files)
+
+print("done fetching")
+if saved_files:
+    for filename in saved_files:
+        print(filename)
+        file_path = os.path.join('/tmp/data', filename)
+        print(file_path)
+        with open(file_path, "rb") as f:
+            st.download_button(
+                label=f"⬇️ Download {filename}",
+                data=f,
+                file_name=filename,
+                mime="application/octet-stream",
+                use_container_width=True
+            )
+else:
+    st.info("No files available for download.")
+
+
+

requirements.txt

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+streamlit