Docker runner maven "package does not exist" errors

I'm using docker executor to run maven builds but they are failing with "package does not exist" and "cannot find symbol" errors. The dependencies are all being downloaded though, in the logs I see the " Downloaded: http://repo1.maven.org/maven2/org/codehaus/plexus/plexus-classworlds/2.2.2/plexus-classworlds-2.2.2.jar (46 KB at 72.7 KB/sec)". The same .yml configuration I have works for shell executor type but not for docker. For my docker image I am inheriting from maven:3.3.9-jdk-8 so I can add in a custom settings.xml because of proxy authentication. Are there any other settings I need to provide? I don't know why it is failing to find the packages when they are being downloaded.