Unable to connect to tomcat running in Docker (Connection refused)
You are using docker toolbox. The boot2docker has been depricated. Now every docker daemon (VM) is managed by Docker Machine
To see which VMs are running, use the command
docker-machine lsIt will show you the default VM running on the system along with its IP address and you can access Tomcat from that IP at port 8080. Read more about docker-machine to see how to manage multiple VMs etc.