Installing playbook dependancies??

[projx]

Hi All

I've got an "amateurish" question - I'm running Semaphore in a container, and have a few playbooks for powering my ESXi hosts on and off at certain times. These use Roles that have dependencies on some Python libraries, like VMWare's pyVomi etc...

I've limited experience with Ansible, but from what I understand, using requirements.yml is the best way to grab Roles from Ansible Galaxy - But how do I get Python libraries installed as-well?

The only solution I can think of, and what I'm currently doing, is manually editing the Dockerfile used to build Semaphore, and getting it to include pip3, which in turn installs the python libraries.

Thanks

[fiftin]

Good question, i would like to know the answer too.

[bverkron]

Not sure if you found a suitable workflow for this but unless Semaphore decided to provide a mechanism for such things at runtime (which isn't really the right way to do it anyway, most of the time) then you're using the right approach, roughly, I would say.

Better approach though would be to create a child image from the official Semaphore image rather than manipulating the official one directly.

For example:

FROM: semaphoreui/semaphore

RUN "your pip installs here"

This way you can easily rebuild your image after upstream changes to the official image without having to merge your changes into the official Dockerfile like you are now.

ENTRYPOINT and CMD from the parent image should be inherited and unchanged unless you explicitly override them. So, in theory, if you do the above you'd effectively have the official image with a few of your own pip additions and things should function as normal (but with the added python libraries).

When there are upstream changes to the official image you just re-build yours, no manual Dockerfile changes required on your part.

[fiftin]

You can put requirements.txt file to directory $SEMAPHORE_CONFIG_PATH and this file will be used to install python packages.