[Enhancement] added Dockerfile, docker-compose.yaml and the README.md

Dockerfile

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+FROM python:3.8
+WORKDIR /app
+COPY requirements.txt ./
+RUN pip3 install --no-cache-dir -r requirements.txt
+COPY . .
+
+CMD ["uvicorn", "main:app", "--reload"]

README.md

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+# This repo is for [Youtube FastAPI 4 hours full course](https://www.youtube.com/watch?v=7t2alSnE2-I)
+
+## Created by [Sarthak](https://twitter.com/Sarthaksavvy)
+
+### The Docker usage is simply based on docker-compose:
+
+*To build the container*
+
+```
+docker-compose -f docker-compose.yaml up --build
+```
+It should be up now.
+
+*To login to the container(if you want)*
+
+```
+docker-compose -f docker-compose.yaml exec /bin/bash
+```
+
+
+> Note: if you updated/edited the code just run the build command again to get the new changes.
+

docker-compose.yaml

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+version: "3.7"
+
+services:
+  api_v1:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: fastapi_bitfumes_full_course_v1
+    ports:
+    - "8000:8000"
+    network_mode: host