Previously, the first line of the Dockerfile would have been selected, regardless of its value.
What we want is to actually select the first line matching the regex, and then extract the group corresponding to the Go version out of it.
- One unique file to list all dependencies and dependencies' versions (except Go, currently defined in `build/Dockerfile`).
- Custom versions can now be injected into Vagrant VMs.
- Vagrant dev VMs, Vagrant test VMs, and `run-integration-tests.sh` all source from `DEPENDENCIES`, to keep things 'DRY'.
- Vagrant versions can be overriden using environment variables, like it was possible in `run-integration-tests.sh`.
This way, Vagrant VMs and cloud-provided VMs are configured in the exact same way, hence avoiding configuration drift and subtle bugs associated to different versions of software.
now you can
- run `vagrant provision` any time
- upgrade the base image with `vagrant box update`
- upgrade docker inside the VM w/o
...etc...
...without breaking things!
NathanHaim