Add README file

README.md

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+---
+title: Object Detection Lambda
+emoji: 🌖
+colorFrom: purple
+colorTo: green
+sdk: gradio
+sdk_version: 5.5.0
+app_file: app.py
+pinned: false
+short_description: Object detection Lambda
+---
+
+# Object detection via AWS Lambda
+
+<b>Aim: AI-driven object detection task</b>
+ - Front-end: user interface via Gradio library
+ - Back-end: use of AWS Lambda function to run ML models
+
+## Local development
+
+### User interface
+Use of Gradio library for web interface
+
+Command line:
+> python3 app.py
+
+<b>Note:</b> The Gradio app should now be accessible at http://localhost:7860
+
+
+### Building the docker image:
+
+bash
+> docker build -t object-detection-lambda .
+
+### Running the docker container locally:
+
+bash
+
+> docker run --name object-detection-lambda-cont -p 8080:8080 object-detection-lambda
+
+
+### Testing locally:
+
+Example of a prediction request
+
+python
+> python3 inference_api.py --api http://localhost:8080/2015-03-31/functions/function/invocations --file ./tests/data/boats.jpg