django - docker 容器刚运行就退出是怎么回事？

Question

我的Dockerfile:

FROM continuumio/miniconda:latest

MAINTAINER Kamil Kwiek <kamil.kwiek@continuum.io>

ADD backend.tar.gz /usr/src/ 

# app 所在目录
WORKDIR /usr/src/backend

# 安装miniconda,配置conda 环境

RUN apt-get install -y gcc g++

COPY backend_uwsgi.ini /usr/src/backend/

COPY environment.txt /usr/src/backend/environment.txt

RUN conda env create -f /usr/src/backend/environment.txt

start.sh的内容:

#!/bin/bash 
#
docker exec -d mysql mysql -uroot -p123456 -e "create database blog;"
docker build -t feiyu/django-app .
docker run --name django \
-v /usr/src/backend \
-v /usr/src/backend/static \
--link mysql:mysql \
-p 12000:8000 \
-d feiyu/django-app uwsgi --ini /usr/src/backend/backend_uwsgi.ini /bin/bash
sleep 15
#-d feiyu/django-app /usr/local/bin/gunicorn backend.wsgi:application -w 1 -b :8000

输入sudo docker ps -a 查看，结果都是

51e87164a739        feiyu/django-app           "/usr/bin/tini -- ..."   5 minutes ago       Exited (127) 8 seconds ago                            django

一运行就exit了，这是怎么回事？怎么办？