The DockerTenantProvisioner hardcoded SPRING_DATASOURCE_USERNAME
and SPRING_DATASOURCE_PASSWORD as "cameleer" / "cameleer_dev".
With the installer generating random passwords, tenant servers
failed to connect to PostgreSQL.
Add datasourceUsername and datasourcePassword to ProvisioningProperties,
pass them from the compose env vars, and use them in the provisioner.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
b70d95cbb9