PG_DATABASE_URL validation

worker-1  | Error: An instance of EnvironmentVariables has failed the validation:
worker-1  |  - property PG_DATABASE_URL has failed the following constraints: isUrl
server-1  | Error: An instance of EnvironmentVariables has failed the validation:
server-1  |  - property PG_DATABASE_URL has failed the following constraints: isUrl 

PG_DATABASE_HOST=db:5432
PGUSER_SUPERUSER=postgres
PGPASSWORD_SUPERUSER=removed

...
PG_DATABASE_URL: postgres://${PGUSER_SUPERUSER:-postgres}:${PGPASSWORD_SUPERUSER:-twenty}@${PG_DATABASE_HOST:-db:5432}/default
...