Create user and adjust permissions

As the first step we need to create user with which permissions IoT framework will be running

sudo useradd --home-dir /home/tigase --create-home --system tigase

If you are installing Tigase IoT Framework on Raspberry PI and want to use GPIO, SPI or I2C connected devices then we need to add newly created user to proper groups

sudo usermod -a -G spi,i2c,gpio tigase