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I am using Windows 11 x64, Java / JDK 19, Spring Boot 3, PostgreSQL 15.1 at my local PC. My Dockerfile

FROM amazoncorretto:19-alpine3.16-jdk
WORKDIR /app
ARG JAR_FILE=target/spring_jwt-1.0.0-SNAPSHOT.jar
COPY ${JAR_FILE} ./app.jar
EXPOSE 8081
ENTRYPOINT ["java","-jar","app.jar"]

My console log:

org.postgresql.util.PSQLException: Connection to 127.0.0.1:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
        at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:319) ~[postgresql-42.5.1.jar!/:42.5.1]
        at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49) ~[postgresql-42.5.1.jar!/:42.5.1]
        at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:247) ~[postgresql-42.5.1.jar!/:42.5.1]
        at org.postgresql.Driver.makeConnection(Driver.java:434) ~[postgresql-42.5.1.jar!/:42.5.1]
        at org.postgresql.Driver.connect(Driver.java:291) ~[postgresql-42.5.1.jar!/:42.5.1]
        at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-5.0.1.jar!/:na]
        at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:359) ~[HikariCP-5.0.1.jar!/:na]
        at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201) ~[HikariCP-5.0.1.jar!/:na]
        at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:470) ~[HikariCP-5.0.1.jar!/:na]        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561) ~[HikariCP-5.0.1.jar!/:na]

full: https://gist.github.com/donhuvy/0821da63081f4fd447111b7d1c6f2310
Docker run

docker run -p 8081:8081 latest:latest

How to run image with database connect?