fix
Dokku errors
runtime: panic before malloc heap initialized
fatal error: runtime: cannot allocate heap metadata
dd if=/dev/zero of=/extraswap bs=1M count=512
mkswap /extraswap
Add line to the /etc/fstab
/extraswap none swap sw 0 0
Then run this to enable /extraswap for swapping:
swapon -a
reboot now
Thanks for help