Send keystroke to Dockerfile, Ubuntu

Question

I'm creating Dockerfile script and it has a command line that executes a program and requires user input 1 from keyboard as selected option to go to further steps.

Xdotool, man yes or expect cannot help in this situation.

Update source-code:

First off, download and extract RevoMath library, navigate to RevoMath folder then execute the install script.


...
RUN wget -q https://mran.microsoft.com/install/mro/3.2.4/RevoMath-3.2.4.tar.gz
RUN tar -xzf RevoMath-3.2.4.tar.gz
RUN cd RevoMath/
RUN ./RevoMath.sh
...

Install script has some select options as follow:


echo "1. Install MKL"
echo "2. Uninstall MKL"
echo "3. Exit utility"

We need to enter 1 from keyboard to install. How can we do it via Docker command?

Any help would be appreciated!

Is it possible for you to share the program you want to execute (so we can try to reproduce / find a solution)? — Christophe Schmitz, May 18 '16 at 04:12
Build your image before entering 1, run it, enter 1, `docker commit -t myimage` , create a new Dockerfile starting with `FROM myimage` and go on — user2915097, May 18 '16 at 05:55

score 2 · Answer 1 · answered Sep 04 '17 at 15:52

2

If I correctly understand you, you would like to add echo 1 | before ./RevoMath.sh in your Dockerfile:

...
RUN cd RevoMath/ && echo 1 | ./RevoMath.sh
...

BTW: In your example this lines will not work as you expected:

RUN cd RevoMath/
RUN ./RevoMath.sh

Because each RUN is an independent execution. You should use && if you want to execute RevoMath.sh script from specific folder (see my example in the beginning)

answered Sep 04 '17 at 15:52

Victor Perov

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1

This helped me with another script where I needed to press "Y" on the keyboard to allow for a package to install. Thank you very much for the tip! – AJC24 Feb 26 '21 at 13:54

score 0 · Answer 2 · answered Jun 08 '18 at 04:33

I suggest to use redirect from standard input.

For example install.sh required some input(s) from user at execution time.
Suppose you need to enter 1 as a response to first interaction(questions) and
then you have another response as y for further interaction then it's good to use redirect from stdin.

$#>install.sh <EOF
$#>1
$#>y
$#>EOF

This way whenever script is waiting for inputs it will answer as 1 for the first question and y for the second question.

Send keystroke to Dockerfile, Ubuntu

2 Answers2