Re: [atomic-devel] Using docker run -ti for interactive INSTALL?

[Dusty Mabe <dusty dustymabe com>]

On 03/03/2016 10:06 AM, Daniel J Walsh wrote:
> 
> 
> On 03/03/2016 10:04 AM, Jan Pazdziora wrote:
>> Hello,
>>
>> I have container images where the INSTALL phase can be interactive,
>> asking questions, and also passwords.
>>
>> For that, it would make sense to define INSTALL as
>>
>> 	docker run -ti ...
>>
>> so that the setup script can disable echo on the terminal.
>>
>> However, for cases like automated deployments via puppet or kickstarts
>> when parameters will be passed via command line, having stdin closed
>> causes
>>
>> 	$ docker run --rm -ti fedora id < /dev/null
>> 	cannot enable tty mode on non tty input
>>
>> What is the best approach to be able to support interactive INSTALLs
>> with tty, as well as batched invocations?
>>
>> Ideally docker run's --tty option would accept not just true and false
>> but also something like true-if-possible to not fail. Does is sound
>> like something worth proposing?
>>
>> Alternatively atomic could add support for something like
>> ${INTERACTIVE} in the INSTALL / RUN / UNINSTALL which would expand to
>> -ti when stdin exists and is tty, but to empty string when not. Or
>> atomic could even accept that -ti option to be explicit about the
>> invocation method.
>>
>> What do you guys recommend?
>>
> I think this is the use case that Nulecule is trying to address, 
> defining local customizations.
> 

Dan,

You are right in that Atomic App will query the user for needed
information during the run of that Atomic App. However, I don't know
if Atomic App will solve the problem Jan is having. 

We also have had issues with automating things when the presence of a
tty is in question:

https://github.com/projectatomic/atomicapp/issues/430

Dusty