Is there way to set hostname during docker build phase now? Said I want to install a license server that is binded with hostname, do I have to use those weired, auto generated, serial numbers and letters as my hostname? Or, I just need to give up insalling license server with Dockerfile. Tks.

I think the Docker daemon sets the hostname dynamically at runtime, I don’t think it can be set in the image (output of docker build). Think about it: Would it make sense to have only one static hostname that all running instances of the application would share? Then every running instance of your…

Hey there, Thanks for reply. Like you said, it doesn’t make sense to have a static hostname in build phase in most of case. But for a license server, I will probably not want to have more than one instance running. In this case, in order to make my license keys to match my hostname, I will need to …

It’s not my app. I I was told that it’s a Flexlm license server, and from what I understand, it is bound to hostname/hostid for license generation. I am not familiar with license server. nor do I know any IT stuffs well. I am just a hobbyist, and this is kind of experiment I did in my spare time. …

Is there a solution to this? I am trying to figure out how to set up my Dockerfile to change the hostname. The following did not work: ENV HOSTNAME="foo" - sets the environment variable but does not actually change the active hostname RUN echo "foo" > /etc/hostname - same as above RUN sudo /etc/i…

I found a solution :slight_smile: You just need to set the hostname and run the command that is dependant on the hostname in the same RUN command, since the hostname is reset for each layer. Reference: https://stackoverflow.com/questions/28898787/how-to-handle-specific-hostname-like-h-option-in-doc…

Customizing hostname during docker build phase?

General

richardpayne (Richardpayne) May 26, 2016, 3:18pm 4

Why is your license server bound to a specific hostname? That seems like an odd design choice. Is it your own app or a third party one?

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Customizing hostname during docker build phase?

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