4 Previously the swap size was fixed at 1GB.
7 If the environmental variable 'SWAP_SIZE' is set when the
8 'init.sh' script is called, then a 'SWAP_SIZE' GB swap space will
9 be configured. If 'SWAP_SIZE' is '0' or is not a valid integer,
10 then no swap space is cofigured. If it is unset then 1GB of swap