Add git commit hash to MANIFEST.MF file. about rico

[imanishbarnwal]

Hello @sclassen, can you clarify this issue? I am not able to understand but I want to contribute to this project.

[sclassen]

I can try to give more details:

The current build tool for the rico project is gradle. If you do not know gradle you can find many resources in the internet.
But since it is a very elaborate tool there are many aspects to it and the documentation is very big.
For the task at hand it is important to know that gradle comes with very little in its core and every project can customize the build using plugins.
net.nemerosa.versioning is a gradle plugin which searches for a vcs (version control system) in the project (e.g. GIT). If one is found the plugin extracts different pieces of information from from the vcs.
These pieces are stored as properties during the build process. Such properties can be accessed by other plugins.

Another plugin which we are using is the java plugin. It compiles the java files and builds the JAR. It also creates the MANIFEST.MF file which contains meta information about the JAR and is included in the same.

The goal is now to add the net.nemerosa.versioning plugin to the build.gradle file and configure it according to the documentation which can be found on the github page of the plugin.
Once it is added and configured the second step is to extend the MANIFEST.MF content with the commit hash which now is made available by net.nemerosa.versioning.

[sclassen]

All changes for this task should be made to the build.gradle file.