FIX locale
Not sure what changed, but the locale is not problem generated in the base image anymore. Also, pg-15.3 image has been removed from DockerHub's README for postgres, so let's move to 15.4.
Not sure what changed, but the locale is not problem generated in the base image anymore. Also, pg-15.3 image has been removed from DockerHub's README for postgres, so let's move to 15.4.