How to install built packages I developed

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I'm currently looking for a way to install built packages developed.
I have some PC, one is for development and build, others are for testing on robots.
I want not to build ROS packages on testing PC.

Now, I'm thinking that the best way to do this is to just copy and overwrite the devel directory generated by catkin_make.
Is there any other correct way?

By the way, let's assume that the machine on which the package will be installed has the same machine specs, other installed packages, etc. as the machine on which it will build.
Additionally, I don't want to make it available to the outside world.

Thanks in advance.