Update Dockerfile

Dockerfile

@@ -17,6 +17,7 @@ ENV AIRFLOW__CORE__EXECUTOR=LocalExecutor
 
 # 4. Force the port again just to be safe
 ENV AIRFLOW__WEBSERVER__WEB_SERVER_PORT=7860
+ENV AIRFLOW__WEBSERVER__BASE_URL=http://0.0.0.0:7860
 
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt