Running a script inside a docker container using shell script

I am trying to create a shell script for setting up a docker container. My script file looks like:

#!bin/bash

docker run -t -i -p 5902:5902 --name "mycontainer" --privileged myImage:new /bin/bash

Running this script file will run the container in a newly invoked bash.

Now I need to run a script file (test.sh)which is already inside container from the above given shell script.(eg: cd /path/to/test.sh && ./test.sh) How to do that?

You can run a command in a running container using docker exec [OPTIONS] CONTAINER COMMAND [ARG...]:

docker exec mycontainer /path/to/test.sh

And to run from a bash session:

docker exec -it mycontainer /bin/bash

From there you can run your script.

Assuming that your docker container is up and running, you can run commands as:

docker exec mycontainer /bin/sh -c "cmd1;cmd2;...;cmdn"

I was searching an answer for this same question and found ENTRYPOINT in Dockerfile solution for me.

Dockerfile

...
ENTRYPOINT /my-script.sh ; /my-script2.sh ; /bin/bash

Now the scripts are executed when I start the container and I get the bash prompt after the scripts has been executed.

In case you don't want (or have) a running container, you can call your script directly with the run command.

Remove the iterative tty -i -t arguments and use this:

    $ docker run ubuntu:bionic /bin/bash /path/to/script.sh

This will (didn't test) also work for other scripts:

    $ docker run ubuntu:bionic /usr/bin/python /path/to/script.py