Issue-840: Create an RPM distribution

[v3rtumnus]

Fixes #840

[v3rtumnus]

Added the creation of the RPM file and also a service file, as well as a postinstall script to create the relevant user and group.

[v3rtumnus]

@steve-todorov Hi, I think you are the right person for my question: Seems like the Jenkins build fails because rpm is not installed on the relevant machine. Can I fix that or could you do that?

[steve-todorov]

rpm and dpkg-dev have been added to our alpine images 👍

[carlspring]

In this line of thought, would it be possible to add apt and aptitude as well for the similar task for creating Debian distributions?

[carlspring]

@steve-todorov ,

Could you please try this out and give some feedback?

[carlspring]

Please, make sure you add new lines to the end of files when creating, or editing them, as this can sometimes be a problem on different operating systems.

[carlspring]

@v3rtumnus , @steve-todorov :

Once this task is done, I think it would be a good idea to go over the Installation Guide and update it as necessary.

Things will then need to be tested based on the instructions.

[steve-todorov]

This should not be a regular user but rather a system one. Could you please add --system here?

Suggested change

	useradd -d /usr/local/strongbox -g strongbox strongbox
	useradd -d /usr/local/strongbox -g strongbox --system strongbox

[steve-todorov]

The produced RPM does not work out of the box in opensuse leap 15 just yet.

Strongbox expects to be able to write into $STRONGBOX_VAULT which currently is $STRONGBOX_HOME/../strongbox-vault. What this mean in this case is /usr/local/strongbox-vault. That path does not exist and in most cases on SELinux distributions you would not be able to write there to begin with (unless you have manually configured it).

By convention databases are usually stored in /var/lib/product-name and I think we should do it the same (thoughts @carlspring?). We should probably create an /etc/sysconfig/strongbox file which contains the STRONGBOX_VAULT environment variable that points to /var/lib/strongbox.
This would be the same for Debian, only the path for the file would be /etc/default/strongbox.

[carlspring]

Closing this in favour of the rebased version of this branch in #1068.