I just launched the Jenkins Container solution using the 8080 port and accessed it from a remote machine. I could log in to the application without problems. Have you tried using an incognito window? Maybe the redirection is cached in your browser and that's why it redirects you to /jenkins.
In case you continue running into issues, please create an issue in the Github repository of the Bitnami Jenkins Container solution
Our team will review the issue with the solution there.