Configuration parsing from JSON config file. Using Ubuntu 18.04 base image.

Squashed commit of the following:

commit bccedf5c278490f6befcb0f4f37db7e588f6901d
Author: Anže Žitnik <anze.zitnik@xlab.si>
Date:   Tue Feb 18 12:42:54 2020 +0100

    CI...

commit 5a7f5b4e03fd857683aa110da4f4d31c2fee03a5
Author: Anže Žitnik <anze.zitnik@xlab.si>
Date:   Tue Feb 18 12:36:57 2020 +0100

    CI...

commit 39f9ec5bd410280afb2e856a44ce5ac5b390668d
Author: Anže Žitnik <anze.zitnik@xlab.si>
Date:   Tue Feb 18 10:41:58 2020 +0100

    CI...

commit cf807354e8a65d7ca2c5af7c73c16ae1b04c6f0e
Author: Anže Žitnik <anze.zitnik@xlab.si>
Date:   Tue Feb 18 10:22:59 2020 +0100

    CI...

commit a44ccefa3d2bb34016db540c3728375437f4f043
Author: Anže Žitnik <anze.zitnik@xlab.si>
Date:   Tue Feb 18 10:19:20 2020 +0100

    CI...

commit 7fd21692f7f3629c94b8e7c4ff495a9740984439
Author: Anže Žitnik <anze.zitnik@xlab.si>
Date:   Tue Feb 18 10:17:54 2020 +0100

    CI...

commit 8fdec3c7db52bf7b00f33de350df975a23496701
Author: Anže Žitnik <anze.zitnik@xlab.si>
Date:   Tue Feb 18 10:14:32 2020 +0100

    CI...

commit e2ed633df6ec245edd62b7c6fb049730abe25db7
Author: Anže Žitnik <anze.zitnik@xlab.si>
Date:   Fri Feb 14 19:00:43 2020 +0100

    CI test update

commit 650c02745260ed1e6f434aea8ab1d0d89cc648f7
Author: Anže Žitnik <anze.zitnik@xlab.si>
Date:   Fri Feb 14 18:57:47 2020 +0100

    CI test update

commit a3f71bb2f249479dad74b1b6596399699c09ed4f
Author: Anže Žitnik <anze.zitnik@xlab.si>
Date:   Fri Feb 14 18:43:20 2020 +0100

    CI test update

commit 9a85e5b849eb99a6e8811c859bfe6458f2c1aea0
Author: Anže Žitnik <anze.zitnik@xlab.si>
Date:   Fri Feb 14 18:31:29 2020 +0100

    Configuration parsing from JSON config file. Using Ubuntu 18.04 base image.