## About the changes
This adds a Makefile to make it easy to test migrations from one version
of Unleash to another.
The script depends on [docker compose
V2](https://docs.docker.com/compose/migrate/)
**Before starting**: make sure you're inside test-migrations folder and
run `make clean` to be in a clean state.
We can run 2 versions of Unleash side by side with a shared database
(the second version will apply migrations to the DB):
```shell
UNLEASH_DOCKER_IMAGE=unleashorg/unleash-server:5.6.10 make start-unleash # defaults to port 4242
UNLEASH_DOCKER_IMAGE=unleashorg/unleash-server:latest make start-another-unleash # defaults to port 4243
make test # run basic UI tests against port 4242 (first image)
EXPOSED_PORT=4243 make test # run basic UI tests against port 4243
```
This also enables us to test our local repository with our code of
Unleash server running at port 4244 (`EXPOSE_PORT=4444 make run-current`
if you want to change it):
```shell
UNLEASH_DOCKER_IMAGE=unleashorg/unleash-server:5.6.10 make start-unleash # defaults to port 4242
make run-current # exposes the current backend at 4244
```
You can also connect the latest UI to any of the ports specified above,
starting the UI at port 3000:
```shell
EXPOSED_PORT=4242 make run-current-ui # exposed port defaults to 4244 which is the port of the current backend
```
