Docker在运行docker-compose时退出代码0

Question

Below are my files.

DOckerFile

    # Python support can be specified down to the minor or micro version
    # (e.g. 3.6 or 3.6.3).
    # OS Support also exists for jessie & stretch (slim and full).
    # See https://hub.docker.com/r/library/python/ for all supported Python
    # tags from Docker Hub.
    FROM python:3.7.3

    LABEL Name=mindsdb Version=0.0.1

    WORKDIR /app
    ADD . /app

    RUN  pip install mindsdb

**Docker Compose**

version: '3'

services:
  app:
    container_name: mindsdb
    image: mindsdb
    build:
      context: ./
    volumes:
      - /path/to/mindsdb:/app/
    # tty: true

When I enable tty: true it shows the following and gets stuck

Creating mindsdb ... done
Attaching to mindsdb
mindsdb | Python 3.7.3 (default, May  8 2019, 05:28:42) 
mindsdb | [GCC 6.3.0 20170516] on linux
mindsdb | Type "help", "copyright", "credits" or "license" for more information.

By enabling verbose in docker-compose up shoes below:

compose.cli.verbose_proxy.proxy_callable: docker attach -> <generator object socket_raw_iter at 0x104116f68>
compose.cli.verbose_proxy.proxy_callable: docker start <- ('4511f48c4370b53c2f0cbe9f9c6479ebd9f76ad9426f315ef288dbdea947ed5f')
compose.parallel.feed_queue: Pending: set()
compose.parallel.feed_queue: Pending: set()
compose.parallel.feed_queue: Pending: set()
compose.parallel.feed_queue: Pending: set()
compose.parallel.feed_queue: Pending: set()
compose.parallel.feed_queue: Pending: set()
compose.parallel.feed_queue: Pending: set()
compose.parallel.feed_queue: Pending: set()
compose.parallel.feed_queue: Pending: set()
compose.parallel.feed_queue: Pending: set()
urllib3.connectionpool._make_request: http://localhost:None "POST /v1.25/containers/4511f48c4370b53c2f0cbe9f9c6479ebd9f76ad9426f315ef288dbdea947ed5f/start HTTP/1.1" 204 0
compose.cli.verbose_proxy.proxy_callable: docker start -> None
Starting mindsdb ... done
compose.parallel.feed_queue: Pending: set()
compose.parallel.parallel_execute_iter: Finished processing: <Service: app>
compose.parallel.feed_queue: Pending: set()
Attaching to mindsdb
compose.cli.verbose_proxy.proxy_callable: docker events <- (filters={'label': ['com.docker.compose.project=mindsdb', 'com.docker.compose.oneoff=False']}, decode=True)
mindsdb | Python 3.7.3 (default, May  8 2019, 05:28:42) 
mindsdb | [GCC 6.3.0 20170516] on linux
mindsdb | Type "help", "copyright", "credits" or "license" for more information.
urllib3.connectionpool._make_request: http://localhost:None "GET /v1.25/events?filters=%7B%22label%22%3A+%5B%22com.docker.compose.project%3Dmindsdb%22%2C+%22com.docker.compose.oneoff%3DFalse%22%5D%7D HTTP/1.1" 200 None
compose.cli.verbose_proxy.proxy_callable: docker events -> <generator object APIClient._stream_helper at 0x1041913b8>

I don't get why is it getting inside Python shell. Even docker run -v /path/to/mindsdb:/app/ -i -t python:3.7.3 is doing similar.

Answer 1

This is because you don't have a " CMD " or " ENTRYPOINT " set in your Dockerfile.

Those two commands will tell the Docker what to execute when entering the docker. The reason you're seeing the python shell is probably because that's the default ENTRYPOINT or CMD for the "python:3.7.3" docker that you are inheriting at the start of your Dockerfile..