Add secrets.toml for MongoDB connection and update Dockerfile to include it

.streamlit/secrets.toml

@@ -0,0 +1 @@
+mongo_uri = "mongodb+srv://multichem:Xr1q5wZdXPbxdUmJ@testcluster.lgwtp5i.mongodb.net/?retryWrites=true&w=majority&appName=TestCluster"

Dockerfile

@@ -12,6 +12,9 @@ RUN apt-get update && apt-get install -y \
 COPY requirements.txt ./
 COPY src/ ./src/
 
+RUN mkdir -p .streamlit
+COPY .streamlit/secrets.toml .streamlit/secrets.toml
+
 RUN pip3 install -r requirements.txt
 
 EXPOSE 8501