linux - docker container started in Detached mode stopped after process execution -

i create docker container in detached mode following command:

docker run [options] --name="my_image" -d container_name /bin/bash -c "/opt/init.sh"

so need "/opt/init.sh" executed @ container created. saw container stopped after scripts finish executed.

how keep container started in detached script/services execution @ container creation ?

there 2 modes of running docker container

what need background mode. not given in parameters there many ways this.

run infinite command in detached mode command never ends , container never stops. use "tail -f /dev/null" because quite light weight , /dev/null present in linux images

docker run -d --name=name container tail -f /dev/null

then can bash in running container this:

docker exec -it name /bin/bash -l

if use -l parameter, login login mode execute .bashrc normal bash login. otherwise, need bash again inside manually

entrypoint - can create sh script such /entrypoint.sh. in entrypoint.sh can run never ending script well

#!/bin/sh

#/entrypoint.sh

service mysql restart

...

tail -f /dev/null <- never ending

after save entrypoint.sh, chmod a+x on it, exit docker bash, start this:

docker run --name=name container --entrypoint /entrypoint.sh

this allows each container have own start script , can run them without worrying attaching start script each time

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