I have a docker image that runs play web application. In dockerfile there is CMD which starts the server and it waits until you hit Ctrl+D to exit. If I do:
docker run -d -i -v
It works correctly - starts the server and waits for ctrl+D.
This is however not the case when i start the container:
docker start -i
Instead the server automatically stops:
--- (Running the application, auto-reloading is enabled) ---
[info] p.c.s.NettyServer - Listening for HTTP on /0:0:0:0:0:0:0:0:9000
(Server started, use Ctrl+D to stop and go back to the console...)
[success] Total time: 1 s, completed Jul 27, 2016 11:54:13 AM <--- this indicates that the server was stopped.
How can I force docker start to not stop server?
A docker container exits when its main process finishes. Without having an insight into your docker-file (I have no experience with the play framework), you need to make sure that at least one process stays alive.
You have a couple of options:
- Docker Way
Try using -it like docker run -it <your framework image> bash to get into the container you are starting. This should keep your window open and allow you to run commands in the container.
- Docker "debug" way
Try using the docker inspect <your container> (use docker ps -a to find your container) command to investigate why the container exited. In case you have a start script like start.sh you can try to add while true; do sleep 1000; done to keep the container up to investigate on what it was doing before it exited.
- Try using the one of the published docker images like - https://hub.docker.com/r/ingensi/play-framework/
P.S. I can not loose the feeling that you are new to docker and are mixing the docker start and the docker run command.
