Интеграция liquibase в пользовательский образ контейнера postgres

Я пытаюсь создать образ контейнера на основе официального изображения postgres + моей схемы БД, которая в настоящее время определяется как XML-файлы Liquibase.

Вот как выглядит мой Dockerfile:

FROM postgres:13.1


ENV POSTGRES_USER=myuser
ENV POSTGRES_PASSWORD=mypass
ENV POSTGRES_DB=mydb



# Copy the DB and user creation script which will then be automatically executed during the DB creation
ADD ./db_init.sql /docker-entrypoint-initdb.d/

# Temporary copy liquibase
ADD ./liquibase/ /liquibase/

# Copy and extract OpenJDK for liquibase 
ADD ./openjdk-11+28_linux-x64_bin.tar.gz /liquibase/

ENV JAVA_HOME=/liquibase/jdk-11


# Copy the changelog for the creation of the schema
ADD ./changelog/liquibase/ /liquibase/

# Execute liquibase
RUN /liquibase/liquibase --changeLogFile=/changelog/liquibase/index.xml --url=jdbc:postgresql://localhost:5432/$POSTGRES_DB --username=$POSTGRES_USER --password=$POSTGRES_PASSWORD --logLevel=info update


RUN rm -rf /liquibase

USER postgres

Сборка завершается с ошибкой:

[2020-12-15 10:37:23] SEVERE [liquibase.integration] Unexpected error running Liquibase: liquibase.exception.DatabaseException: liquibase.exception.DatabaseException: Connection could not be created to jdbc:postgresql://localhost:5432/sisdb with driver org.postgresql.Driver.  Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
liquibase.exception.DatabaseException: liquibase.exception.DatabaseException: liquibase.exception.DatabaseException: liquibase.exception.DatabaseException: Connection could not be created to jdbc:postgresql://localhost:5432/sisdb with driver org.postgresql.Driver.  Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
    at liquibase.integration.commandline.CommandLineUtils.createDatabaseObject(CommandLineUtils.java:131)
    at liquibase.integration.commandline.Main.doMigration(Main.java:1409)
    at liquibase.integration.commandline.Main$1.lambda$run$0(Main.java:361)
    at liquibase.Scope.lambda$child$0(Scope.java:160)
    at liquibase.Scope.child(Scope.java:169)
    at liquibase.Scope.child(Scope.java:159)
    at liquibase.Scope.child(Scope.java:138)
    at liquibase.Scope.child(Scope.java:222)
    at liquibase.Scope.child(Scope.java:226)
    at liquibase.integration.commandline.Main$1.run(Main.java:360)
    at liquibase.integration.commandline.Main$1.run(Main.java:193)
    at liquibase.Scope.child(Scope.java:169)
    at liquibase.Scope.child(Scope.java:145)
    at liquibase.integration.commandline.Main.run(Main.java:193)
    at liquibase.integration.commandline.Main.main(Main.java:156)
Caused by: liquibase.exception.DatabaseException: liquibase.exception.DatabaseException: liquibase.exception.DatabaseException: Connection could not be created to jdbc:postgresql://localhost:5432/sisdb with driver org.postgresql.Driver.  Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
    at liquibase.database.DatabaseFactory.openConnection(DatabaseFactory.java:216)
    at liquibase.database.DatabaseFactory.openConnection(DatabaseFactory.java:175)
    at liquibase.database.DatabaseFactory.openDatabase(DatabaseFactory.java:140)
    at liquibase.integration.commandline.CommandLineUtils.createDatabaseObject(CommandLineUtils.java:96)
    ... 14 more
Caused by: liquibase.exception.DatabaseException: liquibase.exception.DatabaseException: Connection could not be created to jdbc:postgresql://localhost:5432/sisdb with driver org.postgresql.Driver.  Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
    at liquibase.database.ConnectionServiceFactory.create(ConnectionServiceFactory.java:36)
    at liquibase.database.DatabaseFactory.openConnection(DatabaseFactory.java:213)
    ... 17 more
Caused by: liquibase.exception.DatabaseException: Connection could not be created to jdbc:postgresql://localhost:5432/sisdb with driver org.postgresql.Driver.  Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
    at liquibase.database.jvm.JdbcConnection.open(JdbcConnection.java:43)
    at com.datical.liquibase.ext.database.jvm.ProJdbcConnection.open(Unknown Source)
    at liquibase.database.ConnectionServiceFactory.create(ConnectionServiceFactory.java:33)
    ... 18 more

Что я делаю не так? На данный момент база данных еще не готова принимать подключения? Придется ли мне запускать liquibase только после запуска контейнера? Если да, то есть ли руководство по передовой практике для такого потока?