Spring boot postgresql properties with environment variables

application.properties

spring.datasource.url=jdbc:postgresql://localhost:5432/webapp
spring.datasource.driverClassName=org.postgresql.Driver
spring.datasource.username=${SPRING_DB_USER}
spring.datasource.password=${SPRING_DB_PASS}
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect

spring.jpa.hibernate.ddl-auto=create
spring.sql.init.mode=always

spring.jpa.defer-datasource-initialization=true