package sample.flyway;

import org.flywaydb.core.Flyway;

public class Migrations {
    public static void main(String[] args) throws Exception {
        Flyway flyway = new Flyway();
        flyway.setDataSource(System.getenv("JDBC_DATABASE_URL"),
                             System.getenv("JDBC_DATABASE_USERNAME"),
                             System.getenv("JDBC_DATABASE_PASSWORD"));
        flyway.migrate();
    }
}

release: java -cp target/spring-boot-sample-flyway-1.0.0.jar:target/dependency/* sample.flyway.Migrations

spring.datasource.url: ${JDBC_DATABASE_URL:}
spring.datasource.username = ${JDBC_DATABASE_USERNAME:}
spring.datasource.password = ${JDBC_DATABASE_PASSWORD:}
spring.datasource.driverClassName=org.postgresql.Driver

dependencies {
    ....
    implementation('org.flywaydb:flyway-core')
}