here we go!

Dockerfile

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+FROM gitlab-registry.nrp-nautilus.io/cboettig/images
+WORKDIR /app
+
+COPY . .
+
+# huggingface uses port 7860 by default
+CMD streamlit run app.py \
+    --server.address 0.0.0.0 \
+    --server.port 7860 \
+    --server.headless true \
+    --server.fileWatcherType none

Makefile

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+BASE="nature.datahub.berkeley.edu"
+MAKEFLAGS += s
+
+.PHONY: serve
+serve: 
+	@echo "\n 🌎  preview at: \033[1m https://${BASE}${JUPYTERHUB_SERVICE_PREFIX}proxy/8501/ \033[0m \n"
+	streamlit run app.py --server.port 8501  1> /dev/null 2>&1
+
+
+.PHONY: chat 
+chat: 
+	@echo "\n 🌎  preview at: \033[1m https://${BASE}${JUPYTERHUB_SERVICE_PREFIX}proxy/8501/ \033[0m \n"
+	streamlit run chat.py --server.port 8501  1> /dev/null 2>&1
+
+.PHONY: rag 
+rag: 
+	@echo "\n 🌎  preview at: \033[1m https://${BASE}${JUPYTERHUB_SERVICE_PREFIX}proxy/8501/ \033[0m \n"
+	streamlit run rag.py --server.port 8501  1> /dev/null 2>&1

README.md

@@ -1,10 +1,19 @@
 ---
-title: Final Team Awesome
-emoji: 🐨
+title: Streamlit Demo
+emoji: 🌍
 colorFrom: yellow
-colorTo: blue
+colorTo: indigo
 sdk: docker
 pinned: false
+license: bsd-2-clause
 ---
 
-Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+For ESPM-157 students using <https://nature.datahub.berkeley.edu> servers: 
+To preview locally, use
+
+```
+make
+```
+
+and click the link provided
+

app.py

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+import streamlit as st
+import leafmap.maplibregl as leafmap
+import ibis
+from ibis import _
+con = ibis.duckdb.connect()
+
+st.title("My title")
+
+# fixme could create drop-down selection of the 300 cities
+city_name = st.text_input("Select a city", "New Haven")
+
+# Extract the specified city 
+city = (con
+    .read_geo("/vsicurl/https://dsl.richmond.edu/panorama/redlining/static/mappinginequality.gpkg")
+    .filter(_.city == city_name, _.residential)
+    .execute()
+)
+
+# Render the map
+m = leafmap.Map(style="positron")
+m.add_gdf(city, "fill", paint = {"fill-color": ["get", "fill"], "fill-opacity": 0.8})
+m.to_streamlit()
+