'Custom logging format for Keycloak running in Docker,

I want to change the log format for Keycloak running in a Docker container. The dockerfile looks like this:

version: "3.8"
services:
  keycloak:
      image: jboss/keycloak:15.0.0
      networks:
        keycloak_network:
      environment:
        DB_VENDOR: POSTGRES
        DB_PORT: 85435
        DB_ADDR: pg_keycloak
        DB_DATABASE: xxx
        DB_USER: xxx
        DB_SCHEMA: public
        DB_PASSWORD: xxx
        KEYCLOAK_USER: xxx
        KEYCLOAK_PASSWORD: xxx
        KEYCLOAK_IMPORT: /opt/jboss/keycloak/imports/my-realm.json
      ports:
        - 8080:8080
      depends_on:
        - pg_keycloak

The logging configuration is here by default: logging.configuration = file:/opt/jboss/keycloak/standalone/configuration/logging.properties

FYI: in the default logging.properties file are these lines, which I want to customize:

# Additional formatters to configure
formatters=PATTERN


formatter.PATTERN=org.jboss.logmanager.formatters.PatternFormatter
formatter.PATTERN.properties=pattern
formatter.PATTERN.pattern=%d{yyyy-MM-dd HH\:mm\:ss,SSS} %-5p [%c] (%t) %s%e%n

formatter.COLOR-PATTERN=org.jboss.logmanager.formatters.PatternFormatter
formatter.COLOR-PATTERN.properties=pattern
formatter.COLOR-PATTERN.pattern=%K{level}%d{yyyy-MM-dd HH\:mm\:ss.SSS}|(keycloak)|%c (%t)| %s%e%n

How do I specify a custom logging.properties file, preferably in the dockercompose.yml file, so it uses the custom log format found within?

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'Custom logging format for Keycloak running in Docker,

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