CMR-10313: Adding dockerfile to build with the correct version of python.

Author: eereiter

subscription/notify-lambda/Dockerfile

@@ -0,0 +1,18 @@
+# Use an official Python runtime as a parent image
+FROM python:3.13-slim
+
+# Install zip utility
+RUN apt-get update && apt-get install -y zip
+
+# Set the working directory in the container
+WORKDIR /app
+
+# Copy the current directory contents into the container at /app
+COPY . /app
+
+# Make sure build.sh is executable
+RUN chmod +x build.sh
+
+# Run build.sh when the container launches
+CMD ["./build.sh"]
+