[lxc-users] dockerfile equivalent in LXC

[Barve, Yogesh Damodar]

For creating  a docker container one can use dockerfile to specify all the required software installation packages and initialization, entrypoint directory and entrypoint command.
What will be the equivalent in the LXC world? How can one specify 
- the required packages for installations, 
- workdirectory, 
- entrypoint command,
- ports to expose and 
- volumes to mount in LXC?

Thanks in advance.

-Yogesh