feature: added support for dockerizing final-ci application

[ireznice]

No description provided.

[lksv]

thanks you for big work.

please do following:

• remove all czech (debug) texts (and such things like echo $VERSION, echo $(cat .current-commit) and echo "Foreman exited, finishing....")
• in base-image: move setting ENV variables to init.sh. The reason is to be able to set only RAILS_ENV during starting docker and all the other variables (FINAL_DATABASE) will be set according the RAILS_ENV. Please note that you will need to call source ../start.sh. Set variables only if they are not already exists. (note: I prefer use ENV or (or instead of) RAILS_ENV).
• remove start, init.sh and prepare_version.sh form all other docker images if they are not modified.
• fix README.md
• EXPOSE and VOLUME all services/data dirs.

[lksv]

it is necessary to update User if already exists.

[lksv]

not sure...
Make sence to move settings this variables to env.sh and here simply source env.sh ?

prefer to use "default value", e.g. USER=${USER:-"travis"}