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Dockerfile

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+# Stage 1: Build stage
+FROM python:3.10-slim AS build-stage
+
+# Set the working directory in the container
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    gcc \
+    libpq-dev \
+    gdal-bin \
+    libgdal-dev \
+    python3-gdal \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set environment variables for GDAL
+ENV GDAL_CONFIG=/usr/bin/gdal-config
+ENV CPLUS_INCLUDE_PATH=/usr/include/gdal
+ENV C_INCLUDE_PATH=/usr/include/gdal
+
+# Copy the requirements file into the container
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir --upgrade pip \
+    && pip install --no-cache-dir -r requirements.txt
+
+# Stage 2: Final stage
+FROM python:3.10-slim AS final-stage
+
+# Set the working directory in the container
+WORKDIR /app
+
+# Install runtime dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libpq5 \
+    gdal-bin \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy Python packages and dependencies from build stage
+COPY --from=build-stage /usr/local/lib/python3.10/site-packages /usr/local/lib/python3.10/site-packages
+COPY --from=build-stage /usr/local/bin /usr/local/bin
+
+# Copy your application code
+COPY . .
+
+# Change permissions to allow all users to write to the /app directory
+RUN chmod 777 /app
+
+# Expose port 8501 for Streamlit
+EXPOSE 8501
+
+# Define environment variable for Streamlit
+ENV STREAMLIT_PORT=8501
+
+# Command to run the Streamlit app
+CMD ["streamlit", "run", "app.py", "--server.address=0.0.0.0"]

app.py

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+import streamlit as st
+import geopandas as gpd
+import folium
+from streamlit_folium import st_folium
+from folium.plugins import Draw
+
+# Title of the app
+st.title("Vector Data Editor")
+
+# Default file path
+default_file_path = "./nyc_roads.geojson"
+
+# Option to choose whether to load the default file or upload a new one
+use_default = st.checkbox("Load default file (nyc_roads.geojson)", value=True)
+
+if use_default:
+    # Load the vector data from the default file path
+    try:
+        gdf = gpd.read_file(default_file_path)
+    except Exception as e:
+        st.error(f"Error reading the default file: {e}")
+        st.stop()
+else:
+    # File uploader for vector data
+    uploaded_file = st.file_uploader("Choose a vector file", type=["geojson", "shp"])
+
+    if uploaded_file is not None:
+        # Load the vector data (GeoJSON or SHP) into a GeoDataFrame
+        try:
+            gdf = gpd.read_file(uploaded_file)
+        except Exception as e:
+            st.error(f"Error reading file: {e}")
+            st.stop()
+    else:
+        st.write("Please upload a vector file to start editing.")
+        st.stop()
+
+# Create a Folium map centered on the uploaded/default data
+m = folium.Map(location=[gdf.geometry.centroid.y.mean(), gdf.geometry.centroid.x.mean()], zoom_start=10)
+
+# Add the vector data to the map in an editable form
+geo_json = folium.GeoJson(gdf, name="Loaded Data").add_to(m)
+
+# Add the Draw plugin to the map to enable editing
+draw = Draw(
+    export=True, 
+    edit_options={'edit': {'selectedPathOptions': None}},
+    draw_options={'polyline': False, 'polygon': True, 'circle': False, 'marker': True}
+)
+draw.add_to(m)
+
+# Display the map in Streamlit
+output = st_folium(m, width=800, height=600)
+
+# Handle the edited data
+if output["last_active_drawing"]:
+    # Get the last edited drawing from the map
+    edited_geojson = output["last_active_drawing"]
+    edited_gdf = gpd.GeoDataFrame.from_features(edited_geojson["features"])
+    
+    # Display the edited GeoDataFrame
+    st.write(edited_gdf)
+
+    # Save changes and download the edited data
+    if st.button("Save Changes"):
+        edited_gdf.to_file("edited_data.geojson", driver="GeoJSON")
+        with open("edited_data.geojson", "rb") as file:
+            st.download_button("Download Edited File", data=file, file_name="edited_data.geojson")

requirements.txt

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+streamlit
+geopandas
+folium
+streamlit-folium