Based on:
Docker image polinux/centos7:latest
Confluence 5.5.3
Java 1.7.0
mysql-connector-java-5.1.31
Pull image from Docker Hub
docker pull polinux/confluence:latest
Start Container
docker run -d --name confluence --net host polinux/confluence:latest
Go to localhost:8090 and follow confluence setup.
Done :)
FYI: Server ID will be generated when container starts.