ci: test postgres

[ValuedMammal]

Adapted from https://github.com/LukeMathWalker/zero-to-production/blob/a48a2a24720f820432a33b070c807b2f448b625f/.github/workflows/general.yml

fixes #4

[ValuedMammal]

@matthiasdebernardini Do you want to take a look at this and help decide if it would be a good direction to go?

[matthiasdebernardini]

Do we need to run the sqlx-cli? the app runs its own migrations and then tears it all down at the end, I think for this that's fine, what do you think?

[ValuedMammal]

Oh good point.. Only that if we opt not to use sqlx-cli we have to hardcode the CREATE DATABASE statement in CI?

[matthiasdebernardini]

that's what the migration does no?

bdk-sqlx/src/lib.rs

Line 132 in f77fd00

if self.migration {

[ValuedMammal]

212aa65 replaces sqlx-cli with a psql command to create the test database in CI.