Title:
Unable to connect IntelliJ to Wildfly in Docker via Management Port

Description:
I have a Wildfly server (version 26.1.3.Final) running in a Docker container with the following port mappings:

0.0.0.0:18080->8080/tcp
0.0.0.0:18787->8787/tcp
0.0.0.0:19990->9990/tcp

The management port of the Wildfly server is accessible via jboss-cli.sh and in the browser at http://localhost:19990/.

However, when I try to run the configuration in IntelliJ to deploy and start the Wildfly server, I get the following error:

Unable to connect to localhost:19990, reason: com.intellij.javaee.process.common.WrappedException: java.io.IOException: java.net.ConnectException: WFLYPRT0053: Could not connect to remote+http://localhost:19990. The connection failed.

• The credentials are correct.
• The management port (19990) is configured correctly.
• The version of the local Wildfly installation (26.1.3) matches the version of the Wildfly server in the Docker container.

Question:
Why can’t IntelliJ connect to the management port of the Wildfly server in the Docker container, even though it is accessible through jboss-cli.sh and the browser? Are there any additional configurations needed to establish the connection properly?