feat: docker for apache airflow

Dockerfile

+FROM apache/airflow:latest
+USER root
+
+RUN apt-get update && \
+    apt-get -y install git && \
+    apt-get clean
+USER airflow
\ No newline at end of file

docker-compose.yml

+version: '3'
+services:
+  sleek-airflow:
+    build: 
+      context: .
+      dockerfile: Dockerfile
+    volumes:
+      - ./airflow:/opt/airflow
+    ports:
+      - "8080:8080"
+    command: airflow standalone
+