CODEWITHSUNDEEP
docker
Wei
Wei

Reputation: 561

How can I run a background program in docker container

I want to run a container, but it is a background program (for example: tinyproxy, I make the image tinyproxy_local) 

docker run -d tinyproxy_local tinyproxy

this will exit because tinyproxy is a background program.

I can do it like this:

docker run -it tinyproxy_local bash
/#: tinyproxy
/#: ctrl+p ctrl+q

this can be running, but I want the tinyproxy can be auto started when I restart the container. I tested it:

docker run -d tinyproxy_local tinyproxy && sleep 99999999999

I think the container can keep running when sleeping, but it don't work.

How can I run a background program in docker container, and It can be auto started when I restart the container?

Or is there any small forground program, that can keep container running? (I have tried sleep 99999999, but it didn't work)

Upvotes: 0

Views: 844

Answers (2)

DannyB
DannyB

Reputation: 14846

You should run your docker processes in the foreground.

With tinyproxy I believe it is the -d flag (source: https://www.mankier.com/8/tinyproxy).

Edit based on comments:

If your entrypoint runs two processes - one your app, and another the tinyproxy - you should separate them to two containers, and run tinyproxy in the foreground with the -d flag. Another source of information can be this tinyproxy docker.

Sticking to one process per container will save you headaches in the future.

Upvotes: 3

Abdulla Thanseeh
Abdulla Thanseeh

Reputation: 10586

use nohup

#!/bin/sh
nohup sh -c programname &

Upvotes: 0

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